72657260 has 24 divisors (see below), whose sum is σ = 164317776. Its totient is φ = 26827200.

The previous prime is 72657259. The next prime is 72657271. The reversal of 72657260 is 6275627.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 72657260.

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, 139466 + ... + 139985.

It is an arithmetic number, because the mean of its divisors is an integer number (6846574).

Almost surely, 2^72657260 is an apocalyptic number.

It is an amenable number.

72657260 is an abundant number, since it is smaller than the sum of its proper divisors (91660516).

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

72657260 is a wasteful number, since it uses less digits than its factorization.

72657260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279473 (or 279471 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 72657260 is about 8523.9228058447. The cubic root of 72657260 is about 417.2788171895.

The spelling of 72657260 in words is "seventy-two million, six hundred fifty-seven thousand, two hundred sixty".