402304420 has 48 divisors (see below), whose sum is σ = 967252608. Its totient is φ = 137687040.

The previous prime is 402304373. The next prime is 402304471. The reversal of 402304420 is 24403204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87499 + ... + 91981.

It is an arithmetic number, because the mean of its divisors is an integer number (20151096).

Almost surely, 2^402304420 is an apocalyptic number.

It is an amenable number.

402304420 is an abundant number, since it is smaller than the sum of its proper divisors (564948188).

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

402304420 is a wasteful number, since it uses less digits than its factorization.

402304420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5140 (or 5138 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 402304420 is about 20057.5277639095. The cubic root of 402304420 is about 738.2185172159.

Adding to 402304420 its reverse (24403204), we get a palindrome (426707624).

The spelling of 402304420 in words is "four hundred two million, three hundred four thousand, four hundred twenty".