72855080 has 16 divisors (see below), whose sum is σ = 163924020. Its totient is φ = 29142016.

The previous prime is 72855067. The next prime is 72855089. The reversal of 72855080 is 8055827.

It can be written as a sum of positive squares in 2 ways, for example, as 70526404 + 2328676 = 8398^2 + 1526^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72855080.

It is not an unprimeable number, because it can be changed into a prime (72855089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910649 + ... + 910728.

Almost surely, 2^72855080 is an apocalyptic number.

It is an amenable number.

72855080 is an abundant number, since it is smaller than the sum of its proper divisors (91068940).

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

72855080 is a wasteful number, since it uses less digits than its factorization.

72855080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821388 (or 1821384 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 72855080 is about 8535.5187305752. The cubic root of 72855080 is about 417.6571748564.

The spelling of 72855080 in words is "seventy-two million, eight hundred fifty-five thousand, eighty".