172989152 has 24 divisors (see below), whose sum is σ = 389226096. Its totient is φ = 74138112.

The previous prime is 172989151. The next prime is 172989169. The reversal of 172989152 is 251989271.

It is a happy number.

172989152 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 (172989151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385913 + ... + 386360.

It is an arithmetic number, because the mean of its divisors is an integer number (16217754).

Almost surely, 2^172989152 is an apocalyptic number.

It is an amenable number.

172989152 is an abundant number, since it is smaller than the sum of its proper divisors (216236944).

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

172989152 is an equidigital number, since it uses as much as digits as its factorization.

172989152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772290 (or 772282 counting only the distinct ones).

The product of its digits is 90720, while the sum is 44.

The square root of 172989152 is about 13152.5340524174. The cubic root of 172989152 is about 557.1938187503.

The spelling of 172989152 in words is "one hundred seventy-two million, nine hundred eighty-nine thousand, one hundred fifty-two".