72294532 has 12 divisors (see below), whose sum is σ = 126595980. Its totient is φ = 36124256.

The previous prime is 72294517. The next prime is 72294553. The reversal of 72294532 is 23549227.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62346816 + 9947716 = 7896^2 + 3154^2 .

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, 2694 + ... + 12322.

It is an arithmetic number, because the mean of its divisors is an integer number (10549665).

Almost surely, 2^72294532 is an apocalyptic number.

It is an amenable number.

72294532 is a deficient number, since it is larger than the sum of its proper divisors (54301448).

72294532 is a wasteful number, since it uses less digits than its factorization.

72294532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11510 (or 11508 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 72294532 is about 8502.6191258929. The cubic root of 72294532 is about 416.5832625239.

The spelling of 72294532 in words is "seventy-two million, two hundred ninety-four thousand, five hundred thirty-two".