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312445952 = 2107213479
BaseRepresentation
bin10010100111111…
…000110000000000
3210202220220021022
4102213320300000
51114441232302
651000445012
710512514100
oct2247706000
9722826238
10312445952
111504052a5
1288779768
134c967a80
142d6d3200
151c66b8a2
hex129f8c00

312445952 has 132 divisors (see below), whose sum is σ = 784082880. Its totient is φ = 123346944.

The previous prime is 312445949. The next prime is 312445999. The reversal of 312445952 is 259544213.

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 11 ways as a sum of consecutive naturals, for example, 652049 + ... + 652527.

Almost surely, 2312445952 is an apocalyptic number.

312445952 is a gapful number since it is divisible by the number (32) 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 312445952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392041440).

312445952 is an abundant number, since it is smaller than the sum of its proper divisors (471636928).

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

312445952 is a wasteful number, since it uses less digits than its factorization.

312445952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 501 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 312445952 is about 17676.1407552667. The cubic root of 312445952 is about 678.5652795348.

The spelling of 312445952 in words is "three hundred twelve million, four hundred forty-five thousand, nine hundred fifty-two".

Divisors: 1 2 4 7 8 13 14 16 26 28 32 49 52 56 64 91 98 104 112 128 182 196 208 224 256 364 392 416 448 479 512 637 728 784 832 896 958 1024 1274 1456 1568 1664 1792 1916 2548 2912 3136 3328 3353 3584 3832 5096 5824 6227 6272 6656 6706 7168 7664 10192 11648 12454 12544 13312 13412 15328 20384 23296 23471 24908 25088 26824 30656 40768 43589 46592 46942 49816 50176 53648 61312 81536 87178 93184 93884 99632 107296 122624 163072 174356 187768 199264 214592 245248 305123 326144 348712 375536 398528 429184 490496 610246 652288 697424 751072 797056 858368 1220492 1394848 1502144 1594112 1716736 2440984 2789696 3004288 3188224 3433472 4881968 5579392 6008576 6376448 9763936 11158784 12017152 19527872 22317568 24034304 39055744 44635136 78111488 156222976 312445952