72255970 has 16 divisors (see below), whose sum is σ = 130170240. Its totient is φ = 28878064.

The previous prime is 72255961. The next prime is 72255973. The reversal of 72255970 is 7955227.

It is not an unprimeable number, because it can be changed into a prime (72255973) 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, 13959 + ... + 18421.

It is an arithmetic number, because the mean of its divisors is an integer number (8135640).

Almost surely, 2^72255970 is an apocalyptic number.

72255970 is a deficient number, since it is larger than the sum of its proper divisors (57914270).

72255970 is a wasteful number, since it uses less digits than its factorization.

72255970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6089.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 72255970 is about 8500.3511692165. The cubic root of 72255970 is about 416.5091806609.

The spelling of 72255970 in words is "seventy-two million, two hundred fifty-five thousand, nine hundred seventy".