402023982 has 16 divisors (see below), whose sum is σ = 805329792. Its totient is φ = 133794360.

The previous prime is 402023971. The next prime is 402024017. The reversal of 402023982 is 289320204.

It is a congruent number.

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, 49308 + ... + 56879.

It is an arithmetic number, because the mean of its divisors is an integer number (50333112).

Almost surely, 2^402023982 is an apocalyptic number.

402023982 is an abundant number, since it is smaller than the sum of its proper divisors (403305810).

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

402023982 is a wasteful number, since it uses less digits than its factorization.

402023982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106823.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 402023982 is about 20050.5357035666. The cubic root of 402023982 is about 738.0469451119.

The spelling of 402023982 in words is "four hundred two million, twenty-three thousand, nine hundred eighty-two".