402235172 has 12 divisors (see below), whose sum is σ = 706040496. Its totient is φ = 200509320.

The previous prime is 402235153. The next prime is 402235193. The reversal of 402235172 is 271532204.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

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, 150578 + ... + 153225.

It is an arithmetic number, because the mean of its divisors is an integer number (58836708).

Almost surely, 2^402235172 is an apocalyptic number.

It is an amenable number.

402235172 is a deficient number, since it is larger than the sum of its proper divisors (303805324).

402235172 is a wasteful number, since it uses less digits than its factorization.

402235172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304138 (or 304136 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 402235172 is about 20055.8014549407. The cubic root of 402235172 is about 738.1761586712.

Adding to 402235172 its reverse (271532204), we get a palindrome (673767376).

The spelling of 402235172 in words is "four hundred two million, two hundred thirty-five thousand, one hundred seventy-two".