321404496 has 160 divisors (see below), whose sum is σ = 987936768. Its totient is φ = 88128000.

The previous prime is 321404483. The next prime is 321404509. The reversal of 321404496 is 694404123.

It is an interprime number because it is at equal distance from previous prime (321404483) and next prime (321404509).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1280371 + ... + 1280621.

Almost surely, 2^321404496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321404496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493968384).

321404496 is an abundant number, since it is smaller than the sum of its proper divisors (666532272).

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

321404496 is a wasteful number, since it uses less digits than its factorization.

321404496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 321404496 is about 17927.7576958191. The cubic root of 321404496 is about 684.9896075288.

The spelling of 321404496 in words is "three hundred twenty-one million, four hundred four thousand, four hundred ninety-six".