72626432 has 18 divisors (see below), whose sum is σ = 144969678. Its totient is φ = 36313088.

The previous prime is 72626423. The next prime is 72626447. The reversal of 72626432 is 23462627.

It can be written as a sum of positive squares in only one way, i.e., 58003456 + 14622976 = 7616^2 + 3824^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141593 + ... + 142104.

It is an arithmetic number, because the mean of its divisors is an integer number (8053871).

Almost surely, 2^72626432 is an apocalyptic number.

It is an amenable number.

72626432 is a deficient number, since it is larger than the sum of its proper divisors (72343246).

72626432 is an equidigital number, since it uses as much as digits as its factorization.

72626432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283713 (or 283699 counting only the distinct ones).

The product of its digits is 24192, while the sum is 32.

The square root of 72626432 is about 8522.1142916532. The cubic root of 72626432 is about 417.2197926169.

The spelling of 72626432 in words is "seventy-two million, six hundred twenty-six thousand, four hundred thirty-two".