72563256 has 32 divisors (see below), whose sum is σ = 201565200. Its totient is φ = 24187680.

The previous prime is 72563243. The next prime is 72563273. The reversal of 72563256 is 65236527.

It is a happy number.

72563256 is a `hidden beast` number, since 72 + 563 + 25 + 6 = 666.

It is a super-2 number, since 2×72563256² = 10530852242643072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 72563256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167755 + ... + 168186.

Almost surely, 2^72563256 is an apocalyptic number.

It is an amenable number.

72563256 is an abundant number, since it is smaller than the sum of its proper divisors (129001944).

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

72563256 is a wasteful number, since it uses less digits than its factorization.

72563256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335956 (or 335946 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 72563256 is about 8518.4068933105. The cubic root of 72563256 is about 417.0987810081.

The spelling of 72563256 in words is "seventy-two million, five hundred sixty-three thousand, two hundred fifty-six".