402320944 has 40 divisors (see below), whose sum is σ = 808117920. Its totient is φ = 194035520.

The previous prime is 402320923. The next prime is 402320993. The reversal of 402320944 is 449023204.

It is a super-2 number, since 2×402320944² = 323724283962102272, which contains 22 as substring.

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, 389709 + ... + 390739.

It is an arithmetic number, because the mean of its divisors is an integer number (20202948).

Almost surely, 2^402320944 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 402320944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404058960).

402320944 is an abundant number, since it is smaller than the sum of its proper divisors (405796976).

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

402320944 is an equidigital number, since it uses as much as digits as its factorization.

402320944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1062 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 402320944 is about 20057.9396748520. The cubic root of 402320944 is about 738.2286241193.

The spelling of 402320944 in words is "four hundred two million, three hundred twenty thousand, nine hundred forty-four".