72697530 has 32 divisors (see below), whose sum is σ = 175025088. Its totient is φ = 19324800.

The previous prime is 72697529. The next prime is 72697571. The reversal of 72697530 is 3579627.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6270 + ... + 13590.

It is an arithmetic number, because the mean of its divisors is an integer number (5469534).

Almost surely, 2^72697530 is an apocalyptic number.

72697530 is an abundant number, since it is smaller than the sum of its proper divisors (102327558).

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

72697530 is a wasteful number, since it uses less digits than its factorization.

72697530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7662.

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 72697530 is about 8526.2846539393. The cubic root of 72697530 is about 417.3558946646.

The spelling of 72697530 in words is "seventy-two million, six hundred ninety-seven thousand, five hundred thirty".