172638116 has 24 divisors (see below), whose sum is σ = 345965760. Its totient is φ = 73840032.

The previous prime is 172638107. The next prime is 172638143. The reversal of 172638116 is 611836271.

172638116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 8750 + ... + 20538.

It is an arithmetic number, because the mean of its divisors is an integer number (14415240).

Almost surely, 2^172638116 is an apocalyptic number.

It is an amenable number.

172638116 is an abundant number, since it is smaller than the sum of its proper divisors (173327644).

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

172638116 is a wasteful number, since it uses less digits than its factorization.

172638116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12323 (or 12321 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 172638116 is about 13139.1824707628. The cubic root of 172638116 is about 556.8166707435.

The spelling of 172638116 in words is "one hundred seventy-two million, six hundred thirty-eight thousand, one hundred sixteen".