173136972 has 12 divisors (see below), whose sum is σ = 403986296. Its totient is φ = 57712320.

The previous prime is 173136967. The next prime is 173136991. The reversal of 173136972 is 279631371.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×173136972² = 59952822146657568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 173136972.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7214029 + ... + 7214052.

Almost surely, 2^173136972 is an apocalyptic number.

173136972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

173136972 is an abundant number, since it is smaller than the sum of its proper divisors (230849324).

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

173136972 is a wasteful number, since it uses less digits than its factorization.

173136972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14428088 (or 14428086 counting only the distinct ones).

The product of its digits is 47628, while the sum is 39.

The square root of 173136972 is about 13158.1523019001. The cubic root of 173136972 is about 557.3524817652.

The spelling of 173136972 in words is "one hundred seventy-three million, one hundred thirty-six thousand, nine hundred seventy-two".