172994148 has 18 divisors (see below), whose sum is σ = 437290854. Its totient is φ = 57664704.

The previous prime is 172994123. The next prime is 172994177. The reversal of 172994148 is 841499271.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 172975104 + 19044 = 13152^2 + 138^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2402661 + ... + 2402732.

Almost surely, 2^172994148 is an apocalyptic number.

172994148 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

172994148 is an abundant number, since it is smaller than the sum of its proper divisors (264296706).

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

172994148 is a wasteful number, since it uses less digits than its factorization.

172994148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4805403 (or 4805398 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 172994148 is about 13152.7239764240. The cubic root of 172994148 is about 557.1991826966.

The spelling of 172994148 in words is "one hundred seventy-two million, nine hundred ninety-four thousand, one hundred forty-eight".