72538692 has 12 divisors (see below), whose sum is σ = 169256976. Its totient is φ = 24179560.

The previous prime is 72538681. The next prime is 72538693. The reversal of 72538692 is 29683527.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (72538693) 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, 3022434 + ... + 3022457.

It is an arithmetic number, because the mean of its divisors is an integer number (14104748).

Almost surely, 2^72538692 is an apocalyptic number.

It is an amenable number.

72538692 is an abundant number, since it is smaller than the sum of its proper divisors (96718284).

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

72538692 is a wasteful number, since it uses less digits than its factorization.

72538692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6044898 (or 6044896 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 72538692 is about 8516.9649523759. The cubic root of 72538692 is about 417.0517104872.

The spelling of 72538692 in words is "seventy-two million, five hundred thirty-eight thousand, six hundred ninety-two".