72641406 has 16 divisors (see below), whose sum is σ = 151599744. Its totient is φ = 23160984.

The previous prime is 72641363. The next prime is 72641417. The reversal of 72641406 is 60414627.

It is a congruent number.

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, 263056 + ... + 263331.

It is an arithmetic number, because the mean of its divisors is an integer number (9474984).

Almost surely, 2^72641406 is an apocalyptic number.

72641406 is an abundant number, since it is smaller than the sum of its proper divisors (78958338).

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

72641406 is a wasteful number, since it uses less digits than its factorization.

72641406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526415.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 72641406 is about 8522.9927842279. The cubic root of 72641406 is about 417.2484645466.

The spelling of 72641406 in words is "seventy-two million, six hundred forty-one thousand, four hundred six".