72704826 has 12 divisors (see below), whose sum is σ = 157527162. Its totient is φ = 24234936.

The previous prime is 72704813. The next prime is 72704831. The reversal of 72704826 is 62840727.

It can be written as a sum of positive squares in only one way, i.e., 46172025 + 26532801 = 6795^2 + 5151^2 .

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 5 ways as a sum of consecutive naturals, for example, 2019561 + ... + 2019596.

Almost surely, 2^72704826 is an apocalyptic number.

72704826 is an abundant number, since it is smaller than the sum of its proper divisors (84822336).

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

72704826 is a wasteful number, since it uses less digits than its factorization.

72704826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039165 (or 4039162 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 72704826 is about 8526.7124966191. The cubic root of 72704826 is about 417.3698562886.

The spelling of 72704826 in words is "seventy-two million, seven hundred four thousand, eight hundred twenty-six".