72739340 has 24 divisors (see below), whose sum is σ = 159395040. Its totient is φ = 27830528.

The previous prime is 72739339. The next prime is 72739357. The reversal of 72739340 is 4393727.

It is a self number, because there is not a number n which added to its sum of digits gives 72739340.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78605 + ... + 79524.

It is an arithmetic number, because the mean of its divisors is an integer number (6641460).

Almost surely, 2^72739340 is an apocalyptic number.

It is an amenable number.

72739340 is an abundant number, since it is smaller than the sum of its proper divisors (86655700).

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

72739340 is a wasteful number, since it uses less digits than its factorization.

72739340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158161 (or 158159 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 72739340 is about 8528.7361314558. The cubic root of 72739340 is about 417.4358896144.

The spelling of 72739340 in words is "seventy-two million, seven hundred thirty-nine thousand, three hundred forty".