72315885 has 8 divisors (see below), whose sum is σ = 115705440. Its totient is φ = 38568464.

The previous prime is 72315877. The next prime is 72315907. The reversal of 72315885 is 58851327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72315885 - 2³ = 72315877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2410515 + ... + 2410544.

It is an arithmetic number, because the mean of its divisors is an integer number (14463180).

Almost surely, 2^72315885 is an apocalyptic number.

It is an amenable number.

72315885 is a deficient number, since it is larger than the sum of its proper divisors (43389555).

72315885 is a wasteful number, since it uses less digits than its factorization.

72315885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4821067.

The product of its digits is 67200, while the sum is 39.

The square root of 72315885 is about 8503.8747050977. The cubic root of 72315885 is about 416.6242726645.

The spelling of 72315885 in words is "seventy-two million, three hundred fifteen thousand, eight hundred eighty-five".