321404972 has 24 divisors (see below), whose sum is σ = 644770560. Its totient is φ = 137324880.

The previous prime is 321404957. The next prime is 321404981. The reversal of 321404972 is 279404123.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8072 + ... + 26607.

It is an arithmetic number, because the mean of its divisors is an integer number (26865440).

Almost surely, 2^321404972 is an apocalyptic number.

It is an amenable number.

321404972 is an abundant number, since it is smaller than the sum of its proper divisors (323365588).

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

321404972 is a wasteful number, since it uses less digits than its factorization.

321404972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35021 (or 35019 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 321404972 is about 17927.7709713171. The cubic root of 321404972 is about 684.9899456851.

The spelling of 321404972 in words is "three hundred twenty-one million, four hundred four thousand, nine hundred seventy-two".