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395513976 = 2331113176779
BaseRepresentation
bin10111100100110…
…001000001111000
31000120020012011210
4113210301001320
51302222421401
6103125123120
712541545654
oct2744610170
91016205153
10395513976
11193291560
12b05594a0
1363c30750
143a757a64
1524ac94d6
hex17931078

395513976 has 128 divisors (see below), whose sum is σ = 1230163200. Its totient is φ = 104110080.

The previous prime is 395513971. The next prime is 395513981. The reversal of 395513976 is 679315593.

It is an interprime number because it is at equal distance from previous prime (395513971) and next prime (395513981).

It is a super-2 number, since 2×3955139762 = 312862610422657152, which contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395513971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54955 + ... + 61733.

It is an arithmetic number, because the mean of its divisors is an integer number (9610650).

Almost surely, 2395513976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 395513976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615081600).

395513976 is an abundant number, since it is smaller than the sum of its proper divisors (834649224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

395513976 is a wasteful number, since it uses less digits than its factorization.

395513976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6829 (or 6825 counting only the distinct ones).

The product of its digits is 765450, while the sum is 48.

The square root of 395513976 is about 19887.5331803620. The cubic root of 395513976 is about 734.0414957224.

The spelling of 395513976 in words is "three hundred ninety-five million, five hundred thirteen thousand, nine hundred seventy-six".

Divisors: 1 2 3 4 6 8 11 12 13 17 22 24 26 33 34 39 44 51 52 66 68 78 88 102 104 132 136 143 156 187 204 221 264 286 312 374 408 429 442 561 572 663 748 858 884 1122 1144 1326 1496 1716 1768 2244 2431 2652 3432 4488 4862 5304 6779 7293 9724 13558 14586 19448 20337 27116 29172 40674 54232 58344 74569 81348 88127 115243 149138 162696 176254 223707 230486 264381 298276 345729 352508 447414 460972 528762 596552 691458 705016 894828 921944 969397 1057524 1267673 1382916 1498159 1789656 1938794 2115048 2535346 2765832 2908191 2996318 3803019 3877588 4494477 5070692 5816382 5992636 7606038 7755176 8988954 10141384 11632764 11985272 15212076 16479749 17977908 23265528 30424152 32959498 35955816 49439247 65918996 98878494 131837992 197756988 395513976