72074512 has 20 divisors (see below), whose sum is σ = 144460620. Its totient is φ = 34794368.

The previous prime is 72074507. The next prime is 72074521. The reversal of 72074512 is 21547027.

It can be written as a sum of positive squares in 2 ways, for example, as 47114496 + 24960016 = 6864^2 + 4996^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77203 + ... + 78130.

It is an arithmetic number, because the mean of its divisors is an integer number (7223031).

Almost surely, 2^72074512 is an apocalyptic number.

It is an amenable number.

72074512 is an abundant number, since it is smaller than the sum of its proper divisors (72386108).

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

72074512 is a wasteful number, since it uses less digits than its factorization.

72074512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155370 (or 155364 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 72074512 is about 8489.6709005709. The cubic root of 72074512 is about 416.1602255088.

The spelling of 72074512 in words is "seventy-two million, seventy-four thousand, five hundred twelve".