72881413 has 16 divisors (see below), whose sum is σ = 81648000. Its totient is φ = 64492480.

The previous prime is 72881407. The next prime is 72881483. The reversal of 72881413 is 31418827.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 72881413 - 2⁵ = 72881381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72881483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86448 + ... + 87286.

It is an arithmetic number, because the mean of its divisors is an integer number (5103000).

Almost surely, 2^72881413 is an apocalyptic number.

It is an amenable number.

72881413 is a deficient number, since it is larger than the sum of its proper divisors (8766587).

72881413 is a wasteful number, since it uses less digits than its factorization.

72881413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052.

The product of its digits is 10752, while the sum is 34.

The square root of 72881413 is about 8537.0611453825. The cubic root of 72881413 is about 417.7074886281.

It can be divided in two parts, 728814 and 13, that added together give a palindrome (728827).

The spelling of 72881413 in words is "seventy-two million, eight hundred eighty-one thousand, four hundred thirteen".