172012772 has 24 divisors (see below), whose sum is σ = 309609216. Its totient is φ = 83583968.

The previous prime is 172012751. The next prime is 172012787. The reversal of 172012772 is 277210271.

172012772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×172012772² = 59176787462247968, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 18893 + ... + 26475.

It is an arithmetic number, because the mean of its divisors is an integer number (12900384).

Almost surely, 2^172012772 is an apocalyptic number.

It is an amenable number.

172012772 is a deficient number, since it is larger than the sum of its proper divisors (137596444).

172012772 is a wasteful number, since it uses less digits than its factorization.

172012772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7747 (or 7745 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 172012772 is about 13115.3639675001. The cubic root of 172012772 is about 556.1435416012.

The spelling of 172012772 in words is "one hundred seventy-two million, twelve thousand, seven hundred seventy-two".