72885013 has 4 divisors (see below), whose sum is σ = 72904480. Its totient is φ = 72865548.

The previous prime is 72885011. The next prime is 72885019. The reversal of 72885013 is 31058827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72885013 - 2¹ = 72885011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72885013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72885011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2145 + ... + 12262.

It is an arithmetic number, because the mean of its divisors is an integer number (18226120).

Almost surely, 2^72885013 is an apocalyptic number.

It is an amenable number.

72885013 is a deficient number, since it is larger than the sum of its proper divisors (19467).

72885013 is a wasteful number, since it uses less digits than its factorization.

72885013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19466.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 72885013 is about 8537.2719881705. The cubic root of 72885013 is about 417.7143661118.

The spelling of 72885013 in words is "seventy-two million, eight hundred eighty-five thousand, thirteen".