72804522 has 32 divisors (see below), whose sum is σ = 173647872. Its totient is φ = 19896624.

The previous prime is 72804521. The next prime is 72804527. The reversal of 72804522 is 22540827.

It is a self number, because there is not a number n which added to its sum of digits gives 72804522.

It is not an unprimeable number, because it can be changed into a prime (72804521) by changing a digit.

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, 36718 + ... + 38649.

It is an arithmetic number, because the mean of its divisors is an integer number (5426496).

Almost surely, 2^72804522 is an apocalyptic number.

72804522 is an abundant number, since it is smaller than the sum of its proper divisors (100843350).

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

72804522 is a wasteful number, since it uses less digits than its factorization.

72804522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75402.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 72804522 is about 8532.5565922530. The cubic root of 72804522 is about 417.5605410192.

The spelling of 72804522 in words is "seventy-two million, eight hundred four thousand, five hundred twenty-two".