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12972568 = 237832791
BaseRepresentation
bin110001011111…
…001000011000
3220102002000111
4301133020120
511310110233
61142014104
7215156620
oct61371030
926362014
1012972568
117360534
124417334
1328c289b
141a19880
151213acd
hexc5f218

12972568 has 32 divisors (see below), whose sum is σ = 28143360. Its totient is φ = 5490720.

The previous prime is 12972563. The next prime is 12972569. The reversal of 12972568 is 86527921.

It is a self number, because there is not a number n which added to its sum of digits gives 12972568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12972563) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3253 + ... + 6043.

It is an arithmetic number, because the mean of its divisors is an integer number (879480).

Almost surely, 212972568 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 12972568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14071680).

12972568 is an abundant number, since it is smaller than the sum of its proper divisors (15170792).

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

12972568 is a wasteful number, since it uses less digits than its factorization.

12972568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887 (or 2883 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 12972568 is about 3601.7451325712. The cubic root of 12972568 is about 234.9679630387.

The spelling of 12972568 in words is "twelve million, nine hundred seventy-two thousand, five hundred sixty-eight".

Divisors: 1 2 4 7 8 14 28 56 83 166 332 581 664 1162 2324 2791 4648 5582 11164 19537 22328 39074 78148 156296 231653 463306 926612 1621571 1853224 3243142 6486284 12972568