402671432 has 16 divisors (see below), whose sum is σ = 761692140. Its totient is φ = 199553536.

The previous prime is 402671417. The next prime is 402671443. The reversal of 402671432 is 234176204.

It can be written as a sum of positive squares in 2 ways, for example, as 281098756 + 121572676 = 16766^2 + 11026^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402671395 and 402671404.

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, 221813 + ... + 223620.

Almost surely, 2^402671432 is an apocalyptic number.

It is an amenable number.

402671432 is a deficient number, since it is larger than the sum of its proper divisors (359020708).

402671432 is a wasteful number, since it uses less digits than its factorization.

402671432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445552 (or 445548 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 402671432 is about 20066.6746622354. The cubic root of 402671432 is about 738.4429349235.

The spelling of 402671432 in words is "four hundred two million, six hundred seventy-one thousand, four hundred thirty-two".