402172804 has 12 divisors (see below), whose sum is σ = 767784528. Its totient is φ = 182805800.

The previous prime is 402172789. The next prime is 402172853. The reversal of 402172804 is 408271204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4570102 + ... + 4570189.

It is an arithmetic number, because the mean of its divisors is an integer number (63982044).

Almost surely, 2^402172804 is an apocalyptic number.

402172804 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

402172804 is a deficient number, since it is larger than the sum of its proper divisors (365611724).

402172804 is a wasteful number, since it uses less digits than its factorization.

402172804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9140306 (or 9140304 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 402172804 is about 20054.2465328419. The cubic root of 402172804 is about 738.1380044159.

The spelling of 402172804 in words is "four hundred two million, one hundred seventy-two thousand, eight hundred four".