172190112 has 24 divisors (see below), whose sum is σ = 451999296. Its totient is φ = 57396672.

The previous prime is 172190101. The next prime is 172190131. The reversal of 172190112 is 211091271.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 896728 + ... + 896919.

It is an arithmetic number, because the mean of its divisors is an integer number (18833304).

Almost surely, 2^172190112 is an apocalyptic number.

172190112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172190112 is an abundant number, since it is smaller than the sum of its proper divisors (279809184).

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

172190112 is a wasteful number, since it uses less digits than its factorization.

172190112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793660 (or 1793652 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 24.

The square root of 172190112 is about 13122.1229989663. The cubic root of 172190112 is about 556.3345983858.

The spelling of 172190112 in words is "one hundred seventy-two million, one hundred ninety thousand, one hundred twelve".