137873172 has 12 divisors (see below), whose sum is σ = 321704096. Its totient is φ = 45957720.

The previous prime is 137873123. The next prime is 137873173. The reversal of 137873172 is 271378731.

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

It is a self number, because there is not a number n which added to its sum of digits gives 137873172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137873173) by changing a digit.

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, 5744704 + ... + 5744727.

Almost surely, 2^137873172 is an apocalyptic number.

137873172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

137873172 is an abundant number, since it is smaller than the sum of its proper divisors (183830924).

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

137873172 is a wasteful number, since it uses less digits than its factorization.

137873172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11489438 (or 11489436 counting only the distinct ones).

The product of its digits is 49392, while the sum is 39.

The square root of 137873172 is about 11741.9407254508. The cubic root of 137873172 is about 516.6065669023.

The spelling of 137873172 in words is "one hundred thirty-seven million, eight hundred seventy-three thousand, one hundred seventy-two".