172180084 has 36 divisors (see below), whose sum is σ = 314396544. Its totient is φ = 82461456.

The previous prime is 172180081. The next prime is 172180087. The reversal of 172180084 is 480081271.

It is an interprime number because it is at equal distance from previous prime (172180081) and next prime (172180087).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172180081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 771997 + ... + 772219.

Almost surely, 2^172180084 is an apocalyptic number.

It is an amenable number.

172180084 is a deficient number, since it is larger than the sum of its proper divisors (142216460).

172180084 is a wasteful number, since it uses less digits than its factorization.

172180084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 172180084 is about 13121.7408905983. The cubic root of 172180084 is about 556.3237982464.

The spelling of 172180084 in words is "one hundred seventy-two million, one hundred eighty thousand, eighty-four".