72855216 has 60 divisors (see below), whose sum is σ = 233024272. Its totient is φ = 20815488.

The previous prime is 72855203. The next prime is 72855229. The reversal of 72855216 is 61255827.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72855203) and next prime (72855229).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35131 + ... + 37146.

Almost surely, 2^72855216 is an apocalyptic number.

It is an amenable number.

72855216 is an abundant number, since it is smaller than the sum of its proper divisors (160169056).

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

72855216 is a wasteful number, since it uses less digits than its factorization.

72855216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72298 (or 72289 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 72855216 is about 8535.5266972812. The cubic root of 72855216 is about 417.6574347392.

The spelling of 72855216 in words is "seventy-two million, eight hundred fifty-five thousand, two hundred sixteen".