402871972 has 24 divisors (see below), whose sum is σ = 746258240. Its totient is φ = 189773280.

The previous prime is 402871961. The next prime is 402871981. The reversal of 402871972 is 279178204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 888 + ... + 28399.

Almost surely, 2^402871972 is an apocalyptic number.

It is an amenable number.

402871972 is a deficient number, since it is larger than the sum of its proper divisors (343386268).

402871972 is a wasteful number, since it uses less digits than its factorization.

402871972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29491 (or 29489 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 402871972 is about 20071.6708821164. The cubic root of 402871972 is about 738.5655019906.

The spelling of 402871972 in words is "four hundred two million, eight hundred seventy-one thousand, nine hundred seventy-two".