72878365 has 16 divisors (see below), whose sum is σ = 103173120. Its totient is φ = 48360960.

The previous prime is 72878359. The next prime is 72878387. The reversal of 72878365 is 56387827.

It is not a de Polignac number, because 72878365 - 2⁹ = 72877853 is a prime.

It is a super-2 number, since 2×72878365² = 10622512170146450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32500 + ... + 34669.

It is an arithmetic number, because the mean of its divisors is an integer number (6448320).

Almost surely, 2^72878365 is an apocalyptic number.

It is an amenable number.

72878365 is a deficient number, since it is larger than the sum of its proper divisors (30294755).

72878365 is a wasteful number, since it uses less digits than its factorization.

72878365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67212.

The product of its digits is 564480, while the sum is 46.

The square root of 72878365 is about 8536.8826277512. The cubic root of 72878365 is about 417.7016655148.

The spelling of 72878365 in words is "seventy-two million, eight hundred seventy-eight thousand, three hundred sixty-five".