172470808 has 16 divisors (see below), whose sum is σ = 324126000. Its totient is φ = 86037216.

The previous prime is 172470803. The next prime is 172470821. The reversal of 172470808 is 808074271.

It is a super-2 number, since 2×172470808² = 59492359224345728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172470803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21043 + ... + 28066.

It is an arithmetic number, because the mean of its divisors is an integer number (20257875).

Almost surely, 2^172470808 is an apocalyptic number.

It is an amenable number.

172470808 is a deficient number, since it is larger than the sum of its proper divisors (151655192).

172470808 is a wasteful number, since it uses less digits than its factorization.

172470808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49554 (or 49550 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 172470808 is about 13132.8141690957. The cubic root of 172470808 is about 556.6367375274.

The spelling of 172470808 in words is "one hundred seventy-two million, four hundred seventy thousand, eight hundred eight".