172000008 has 48 divisors (see below), whose sum is σ = 490354800. Its totient is φ = 54315360.

The previous prime is 172000007. The next prime is 172000019. The reversal of 172000008 is 800000271.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (172000001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61498 + ... + 64233.

It is an arithmetic number, because the mean of its divisors is an integer number (10215725).

Almost surely, 2^172000008 is an apocalyptic number.

172000008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

172000008 is an abundant number, since it is smaller than the sum of its proper divisors (318354792).

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

172000008 is a wasteful number, since it uses less digits than its factorization.

172000008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125762 (or 125755 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 172000008 is about 13114.8773536011. The cubic root of 172000008 is about 556.1297852743.

Adding to 172000008 its reverse (800000271), we get a palindrome (972000279).

The spelling of 172000008 in words is "one hundred seventy-two million, eight", and thus it is an aban number.