402989832 has 96 divisors (see below), whose sum is σ = 1287636480. Its totient is φ = 111421440.

The previous prime is 402989827. The next prime is 402989843. The reversal of 402989832 is 238989204.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2728 + ... + 28520.

It is an arithmetic number, because the mean of its divisors is an integer number (13412880).

Almost surely, 2^402989832 is an apocalyptic number.

402989832 is a gapful number since it is divisible by the number (42) 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 402989832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (643818240).

402989832 is an abundant number, since it is smaller than the sum of its proper divisors (884646648).

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

402989832 is a wasteful number, since it uses less digits than its factorization.

402989832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25843 (or 25836 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 402989832 is about 20074.6066462085. The cubic root of 402989832 is about 738.6375172949.

The spelling of 402989832 in words is "four hundred two million, nine hundred eighty-nine thousand, eight hundred thirty-two".