402399360 has 512 divisors, whose sum is σ = 1630368000. Its totient is φ = 92897280.

The previous prime is 402399343. The next prime is 402399391. The reversal of 402399360 is 63993204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5512284 + ... + 5512356.

Almost surely, 2^402399360 is an apocalyptic number.

402399360 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402399360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (815184000).

402399360 is an abundant number, since it is smaller than the sum of its proper divisors (1227968640).

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

402399360 is a wasteful number, since it uses less digits than its factorization.

402399360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 402399360 is about 20059.8943167705. The cubic root of 402399360 is about 738.2765834878.

The spelling of 402399360 in words is "four hundred two million, three hundred ninety-nine thousand, three hundred sixty".