402172832 has 24 divisors (see below), whose sum is σ = 813179556. Its totient is φ = 195651072.

The previous prime is 402172789. The next prime is 402172853. The reversal of 402172832 is 238271204.

It can be written as a sum of positive squares in 2 ways, for example, as 368486416 + 33686416 = 19196^2 + 5804^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402172795 and 402172804.

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, 168653 + ... + 171020.

Almost surely, 2^402172832 is an apocalyptic number.

It is an amenable number.

402172832 is an abundant number, since it is smaller than the sum of its proper divisors (411006724).

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

402172832 is a wasteful number, since it uses less digits than its factorization.

402172832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339720 (or 339712 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 402172832 is about 20054.2472309484. The cubic root of 402172832 is about 738.1380215461.

The spelling of 402172832 in words is "four hundred two million, one hundred seventy-two thousand, eight hundred thirty-two".