324139972 has 18 divisors (see below), whose sum is σ = 614236938. Its totient is φ = 149602752.

The previous prime is 324139967. The next prime is 324139979. The reversal of 324139972 is 279931423.

It can be written as a sum of positive squares in 3 ways, for example, as 715716 + 323424256 = 846^2 + 17984^2 .

It is not an unprimeable number, because it can be changed into a prime (324139979) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 239073 + ... + 240424.

Almost surely, 2^324139972 is an apocalyptic number.

It is an amenable number.

324139972 is a deficient number, since it is larger than the sum of its proper divisors (290096966).

324139972 is a wasteful number, since it uses less digits than its factorization.

324139972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479527 (or 479512 counting only the distinct ones).

The product of its digits is 81648, while the sum is 40.

The square root of 324139972 is about 18003.8876912738. The cubic root of 324139972 is about 686.9274374295.

The spelling of 324139972 in words is "three hundred twenty-four million, one hundred thirty-nine thousand, nine hundred seventy-two".