72700522 has 8 divisors (see below), whose sum is σ = 109109700. Its totient is φ = 36330624.

The previous prime is 72700519. The next prime is 72700531. The reversal of 72700522 is 22500727.

It can be written as a sum of positive squares in 2 ways, for example, as 55219761 + 17480761 = 7431^2 + 4181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 4647 + ... + 12922.

Almost surely, 2^72700522 is an apocalyptic number.

72700522 is a deficient number, since it is larger than the sum of its proper divisors (36409178).

72700522 is a wasteful number, since it uses less digits than its factorization.

72700522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19640.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 72700522 is about 8526.4601095648. The cubic root of 72700522 is about 417.3616202681.

The spelling of 72700522 in words is "seventy-two million, seven hundred thousand, five hundred twenty-two".