172127992 has 64 divisors (see below), whose sum is σ = 372276000. Its totient is φ = 74059776.

The previous prime is 172127983. The next prime is 172127993. The reversal of 172127992 is 299721271.

172127992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172127993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73788 + ... + 76084.

Almost surely, 2^172127992 is an apocalyptic number.

It is an amenable number.

172127992 is an abundant number, since it is smaller than the sum of its proper divisors (200148008).

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

172127992 is a wasteful number, since it uses less digits than its factorization.

172127992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368 (or 2364 counting only the distinct ones).

The product of its digits is 31752, while the sum is 40.

The square root of 172127992 is about 13119.7557904101. The cubic root of 172127992 is about 556.2676885003.

It can be divided in two parts, 172 and 127992, that added together give a square (128164 = 358²).

The spelling of 172127992 in words is "one hundred seventy-two million, one hundred twenty-seven thousand, nine hundred ninety-two".