172088972724 has 48 divisors (see below), whose sum is σ = 407687880320. Its totient is φ = 56487352320.

The previous prime is 172088972723. The next prime is 172088972753. The reversal of 172088972724 is 427279880271.

It is a super-2 number, since 2×172088972724² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172088972723) 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, 397092 + ... + 708420.

Almost surely, 2^172088972724 is an apocalyptic number.

It is an amenable number.

172088972724 is an abundant number, since it is smaller than the sum of its proper divisors (235598907596).

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

172088972724 is a wasteful number, since it uses less digits than its factorization.

172088972724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312040 (or 312038 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 57.

The spelling of 172088972724 in words is "one hundred seventy-two billion, eighty-eight million, nine hundred seventy-two thousand, seven hundred twenty-four".