72991410 has 16 divisors (see below), whose sum is σ = 175179456. Its totient is φ = 19464368.

The previous prime is 72991403. The next prime is 72991427. The reversal of 72991410 is 1419927.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 1216494 + ... + 1216553.

It is an arithmetic number, because the mean of its divisors is an integer number (10948716).

Almost surely, 2^72991410 is an apocalyptic number.

72991410 is an abundant number, since it is smaller than the sum of its proper divisors (102188046).

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

72991410 is a wasteful number, since it uses less digits than its factorization.

72991410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433057.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 72991410 is about 8543.5010388014. The cubic root of 72991410 is about 417.9175260619.

The spelling of 72991410 in words is "seventy-two million, nine hundred ninety-one thousand, four hundred ten".