72658628 has 12 divisors (see below), whose sum is σ = 145317312. Its totient is φ = 31139400.

The previous prime is 72658609. The next prime is 72658643. The reversal of 72658628 is 82685627.

72658628 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1297448 + ... + 1297503.

It is an arithmetic number, because the mean of its divisors is an integer number (12109776).

Almost surely, 2^72658628 is an apocalyptic number.

It is an amenable number.

72658628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72658628 is a wasteful number, since it uses less digits than its factorization.

72658628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594962 (or 2594960 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 72658628 is about 8524.0030502106. The cubic root of 72658628 is about 417.2814360324.

The spelling of 72658628 in words is "seventy-two million, six hundred fifty-eight thousand, six hundred twenty-eight".