72404634 has 16 divisors (see below), whose sum is σ = 148723488. Its totient is φ = 23482512.

The previous prime is 72404627. The next prime is 72404641. The reversal of 72404634 is 43640427.

It is an interprime number because it is at equal distance from previous prime (72404627) and next prime (72404641).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162852 + ... + 163295.

It is an arithmetic number, because the mean of its divisors is an integer number (9295218).

Almost surely, 2^72404634 is an apocalyptic number.

72404634 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

72404634 is an abundant number, since it is smaller than the sum of its proper divisors (76318854).

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

72404634 is a wasteful number, since it uses less digits than its factorization.

72404634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326189.

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 72404634 is about 8509.0912558275. The cubic root of 72404634 is about 416.7946357511.

The spelling of 72404634 in words is "seventy-two million, four hundred four thousand, six hundred thirty-four".