72807402 has 16 divisors (see below), whose sum is σ = 146155392. Its totient is φ = 24179040.

The previous prime is 72807391. The next prime is 72807403. The reversal of 72807402 is 20470827.

It is a self number, because there is not a number n which added to its sum of digits gives 72807402.

It is not an unprimeable number, because it can be changed into a prime (72807403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20763 + ... + 24014.

It is an arithmetic number, because the mean of its divisors is an integer number (9134712).

Almost surely, 2^72807402 is an apocalyptic number.

72807402 is an abundant number, since it is smaller than the sum of its proper divisors (73347990).

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

72807402 is a wasteful number, since it uses less digits than its factorization.

72807402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45053.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 72807402 is about 8532.7253559458. The cubic root of 72807402 is about 417.5660468975.

The spelling of 72807402 in words is "seventy-two million, eight hundred seven thousand, four hundred two".