72078512 has 40 divisors (see below), whose sum is σ = 152830992. Its totient is φ = 32659200.

The previous prime is 72078511. The next prime is 72078529. The reversal of 72078512 is 21587027.

It is not an unprimeable number, because it can be changed into a prime (72078511) 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, 94838 + ... + 95594.

Almost surely, 2^72078512 is an apocalyptic number.

It is an amenable number.

72078512 is an abundant number, since it is smaller than the sum of its proper divisors (80752480).

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

72078512 is a wasteful number, since it uses less digits than its factorization.

72078512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317 (or 1311 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 72078512 is about 8489.9064776946. The cubic root of 72078512 is about 416.1679240699.

The spelling of 72078512 in words is "seventy-two million, seventy-eight thousand, five hundred twelve".