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70338380 = 22571931853
BaseRepresentation
bin1000011000101…
…00011101001100
311220100120010012
410030110131030
5121001312010
610551332352
71512603110
oct414243514
9156316105
1070338380
11367822a2
121b6810b8
1311759858
1494ad740
156296005
hex431474c

70338380 has 96 divisors (see below), whose sum is σ = 183644160. Its totient is φ = 22083840.

The previous prime is 70338379. The next prime is 70338397. The reversal of 70338380 is 8383307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82034 + ... + 82886.

It is an arithmetic number, because the mean of its divisors is an integer number (1912960).

Almost surely, 270338380 is an apocalyptic number.

70338380 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70338380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91822080).

70338380 is an abundant number, since it is smaller than the sum of its proper divisors (113305780).

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

70338380 is a wasteful number, since it uses less digits than its factorization.

70338380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 70338380 is about 8386.7979586968. The cubic root of 70338380 is about 412.7915392348.

The spelling of 70338380 in words is "seventy million, three hundred thirty-eight thousand, three hundred eighty".

Divisors: 1 2 4 5 7 10 14 19 20 28 31 35 38 62 70 76 95 124 133 140 155 190 217 266 310 380 434 532 589 620 665 853 868 1085 1178 1330 1706 2170 2356 2660 2945 3412 4123 4265 4340 5890 5971 8246 8530 11780 11942 16207 16492 17060 20615 23884 26443 29855 32414 41230 52886 59710 64828 81035 82460 105772 113449 119420 132215 162070 185101 226898 264430 324140 370202 453796 502417 528860 567245 740404 925505 1004834 1134490 1851010 2009668 2268980 2512085 3516919 3702020 5024170 7033838 10048340 14067676 17584595 35169190 70338380