172495008 has 144 divisors (see below), whose sum is σ = 581555520. Its totient is φ = 49268736.

The previous prime is 172494983. The next prime is 172495031. The reversal of 172495008 is 800594271.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 52848 + ... + 56016.

It is an arithmetic number, because the mean of its divisors is an integer number (4038580).

Almost surely, 2^172495008 is an apocalyptic number.

172495008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172495008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290777760).

172495008 is an abundant number, since it is smaller than the sum of its proper divisors (409060512).

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

172495008 is an equidigital number, since it uses as much as digits as its factorization.

172495008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201 (or 3181 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 172495008 is about 13133.7354929967. The cubic root of 172495008 is about 556.6627708780.

The spelling of 172495008 in words is "one hundred seventy-two million, four hundred ninety-five thousand, eight".