402861992 has 32 divisors (see below), whose sum is σ = 815270400. Its totient is φ = 185525184.

The previous prime is 402861989. The next prime is 402862003. The reversal of 402861992 is 299168204.

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, 45773 + ... + 53859.

It is an arithmetic number, because the mean of its divisors is an integer number (25477200).

Almost surely, 2^402861992 is an apocalyptic number.

It is an amenable number.

402861992 is an abundant number, since it is smaller than the sum of its proper divisors (412408408).

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

402861992 is a wasteful number, since it uses less digits than its factorization.

402861992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8585 (or 8581 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 402861992 is about 20071.4222714784. The cubic root of 402861992 is about 738.5594033248.

The spelling of 402861992 in words is "four hundred two million, eight hundred sixty-one thousand, nine hundred ninety-two".