172288396 has 24 divisors (see below), whose sum is σ = 352983456. Its totient is φ = 72036480.

The previous prime is 172288381. The next prime is 172288397. The reversal of 172288396 is 693882271.

It is not an unprimeable number, because it can be changed into a prime (172288397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73891 + ... + 76186.

It is an arithmetic number, because the mean of its divisors is an integer number (14707644).

Almost surely, 2^172288396 is an apocalyptic number.

It is an amenable number.

172288396 is an abundant number, since it is smaller than the sum of its proper divisors (180695060).

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

172288396 is a wasteful number, since it uses less digits than its factorization.

172288396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150129 (or 150127 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 172288396 is about 13125.8674380020. The cubic root of 172288396 is about 556.4404279038.

The spelling of 172288396 in words is "one hundred seventy-two million, two hundred eighty-eight thousand, three hundred ninety-six".