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83015972 = 221343137271
BaseRepresentation
bin1001111001010…
…11100100100100
312210012122111122
410330223210210
5132223002342
612123153112
72025424034
oct474534444
9183178448
1083015972
1142951146
1223975798
13142780a0
14b04d8c4
15744c4d2
hex4f2b924

83015972 has 48 divisors (see below), whose sum is σ = 161855232. Its totient is φ = 37013760.

The previous prime is 83015971. The next prime is 83016001. The reversal of 83015972 is 27951038.

It is not an unprimeable number, because it can be changed into a prime (83015971) 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 15 ways as a sum of consecutive naturals, for example, 306197 + ... + 306467.

It is an arithmetic number, because the mean of its divisors is an integer number (3371984).

Almost surely, 283015972 is an apocalyptic number.

It is an amenable number.

83015972 is a deficient number, since it is larger than the sum of its proper divisors (78839260).

83015972 is a wasteful number, since it uses less digits than its factorization.

83015972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 83015972 is about 9111.3101143579. The cubic root of 83015972 is about 436.2350456693.

The spelling of 83015972 in words is "eighty-three million, fifteen thousand, nine hundred seventy-two".

Divisors: 1 2 4 13 26 43 52 86 137 172 271 274 542 548 559 1084 1118 1781 2236 3523 3562 5891 7046 7124 11653 11782 14092 23306 23564 37127 46612 74254 76583 148508 151489 153166 302978 306332 482651 605956 965302 1596461 1930604 3192922 6385844 20753993 41507986 83015972