172649912 has 32 divisors (see below), whose sum is σ = 337653120. Its totient is φ = 82667520.

The previous prime is 172649899. The next prime is 172649923. The reversal of 172649912 is 219946271.

172649912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×172649912² = 59615984227215488, 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 172649912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20468 + ... + 27644.

It is an arithmetic number, because the mean of its divisors is an integer number (10551660).

Almost surely, 2^172649912 is an apocalyptic number.

It is an amenable number.

172649912 is a deficient number, since it is larger than the sum of its proper divisors (165003208).

172649912 is a wasteful number, since it uses less digits than its factorization.

172649912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7311 (or 7307 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 172649912 is about 13139.6313494710. The cubic root of 172649912 is about 556.8293524927.

The spelling of 172649912 in words is "one hundred seventy-two million, six hundred forty-nine thousand, nine hundred twelve".