402334320 has 40 divisors (see below), whose sum is σ = 1247237136. Its totient is φ = 107289088.

The previous prime is 402334319. The next prime is 402334321. The reversal of 402334320 is 23433204.

It is an interprime number because it is at equal distance from previous prime (402334319) and next prime (402334321).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402334321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 837957 + ... + 838436.

Almost surely, 2^402334320 is an apocalyptic number.

402334320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402334320 is an abundant number, since it is smaller than the sum of its proper divisors (844902816).

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

402334320 is a wasteful number, since it uses less digits than its factorization.

402334320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676409 (or 1676403 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 402334320 is about 20058.2731061276. The cubic root of 402334320 is about 738.2368053461.

Adding to 402334320 its reverse (23433204), we get a palindrome (425767524).

The spelling of 402334320 in words is "four hundred two million, three hundred thirty-four thousand, three hundred twenty".