72745970 has 16 divisors (see below), whose sum is σ = 142846848. Its totient is φ = 26453040.

The previous prime is 72745969. The next prime is 72745973. The reversal of 72745970 is 7954727.

It is not an unprimeable number, because it can be changed into a prime (72745973) 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, 330554 + ... + 330773.

It is an arithmetic number, because the mean of its divisors is an integer number (8927928).

Almost surely, 2^72745970 is an apocalyptic number.

72745970 is a deficient number, since it is larger than the sum of its proper divisors (70100878).

72745970 is a wasteful number, since it uses less digits than its factorization.

72745970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661345.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 72745970 is about 8529.1248085604. The cubic root of 72745970 is about 417.4485719578.

The spelling of 72745970 in words is "seventy-two million, seven hundred forty-five thousand, nine hundred seventy".