402163980 has 24 divisors (see below), whose sum is σ = 1126059312. Its totient is φ = 107243712.

The previous prime is 402163973. The next prime is 402163981. The reversal of 402163980 is 89361204.

It is not an unprimeable number, because it can be changed into a prime (402163981) 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, 3351307 + ... + 3351426.

It is an arithmetic number, because the mean of its divisors is an integer number (46919138).

Almost surely, 2^402163980 is an apocalyptic number.

It is an amenable number.

402163980 is an abundant number, since it is smaller than the sum of its proper divisors (723895332).

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

402163980 is a wasteful number, since it uses less digits than its factorization.

402163980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6702745 (or 6702743 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 402163980 is about 20054.0265283558. The cubic root of 402163980 is about 738.1326059260.

The spelling of 402163980 in words is "four hundred two million, one hundred sixty-three thousand, nine hundred eighty".