72715340 has 12 divisors (see below), whose sum is σ = 152702256. Its totient is φ = 29086128.

The previous prime is 72715333. The next prime is 72715343. The reversal of 72715340 is 4351727.

It is not an unprimeable number, because it can be changed into a prime (72715343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1817864 + ... + 1817903.

It is an arithmetic number, because the mean of its divisors is an integer number (12725188).

Almost surely, 2^72715340 is an apocalyptic number.

It is an amenable number.

72715340 is an abundant number, since it is smaller than the sum of its proper divisors (79986916).

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

72715340 is a wasteful number, since it uses less digits than its factorization.

72715340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3635776 (or 3635774 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 72715340 is about 8527.3290073739. The cubic root of 72715340 is about 417.3899742340.

The spelling of 72715340 in words is "seventy-two million, seven hundred fifteen thousand, three hundred forty".