321406704 has 50 divisors (see below), whose sum is σ = 930248000. Its totient is φ = 107135136.

The previous prime is 321406703. The next prime is 321406711. The reversal of 321406704 is 407604123.

It is a super-2 number, since 2×321406704² = 206604538752287232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321406703) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 122704 + ... + 125295.

It is an arithmetic number, because the mean of its divisors is an integer number (18604960).

Almost surely, 2^321406704 is an apocalyptic number.

It is an amenable number.

321406704 is an abundant number, since it is smaller than the sum of its proper divisors (608841296).

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

321406704 is a wasteful number, since it uses less digits than its factorization.

321406704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248019 (or 248004 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 321406704 is about 17927.8192761975. The cubic root of 321406704 is about 684.9911761166.

The spelling of 321406704 in words is "three hundred twenty-one million, four hundred six thousand, seven hundred four".