72323392 has 14 divisors (see below), whose sum is σ = 143516858. Its totient is φ = 36161664.

The previous prime is 72323387. The next prime is 72323411. The reversal of 72323392 is 29332327.

It can be written as a sum of positive squares in only one way, i.e., 72182016 + 141376 = 8496^2 + 376^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564963 + ... + 565090.

Almost surely, 2^72323392 is an apocalyptic number.

It is an amenable number.

72323392 is a deficient number, since it is larger than the sum of its proper divisors (71193466).

72323392 is a wasteful number, since it uses less digits than its factorization.

72323392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130065 (or 1130055 counting only the distinct ones).

The product of its digits is 13608, while the sum is 31.

The square root of 72323392 is about 8504.3160806734. The cubic root of 72323392 is about 416.6386885392.

The spelling of 72323392 in words is "seventy-two million, three hundred twenty-three thousand, three hundred ninety-two".