72556870 has 16 divisors (see below), whose sum is σ = 130831200. Its totient is φ = 28971904.

The previous prime is 72556853. The next prime is 72556879. The reversal of 72556870 is 7865527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72556879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67 + ... + 12046.

It is an arithmetic number, because the mean of its divisors is an integer number (8176950).

Almost surely, 2^72556870 is an apocalyptic number.

72556870 is a deficient number, since it is larger than the sum of its proper divisors (58274330).

72556870 is a wasteful number, since it uses less digits than its factorization.

72556870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12719.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 72556870 is about 8518.0320497166. The cubic root of 72556870 is about 417.0865449211.

The spelling of 72556870 in words is "seventy-two million, five hundred fifty-six thousand, eight hundred seventy".