172628965 has 32 divisors (see below), whose sum is σ = 232848000. Its totient is φ = 122093568.

The previous prime is 172628957. The next prime is 172628969. The reversal of 172628965 is 569826271.

172628965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 172628965 - 2³ = 172628957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172628969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224101 + ... + 224869.

It is an arithmetic number, because the mean of its divisors is an integer number (7276500).

Almost surely, 2^172628965 is an apocalyptic number.

It is an amenable number.

172628965 is a deficient number, since it is larger than the sum of its proper divisors (60219035).

172628965 is a wasteful number, since it uses less digits than its factorization.

172628965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949.

The product of its digits is 362880, while the sum is 46.

The square root of 172628965 is about 13138.8342329143. The cubic root of 172628965 is about 556.8068322067.

The spelling of 172628965 in words is "one hundred seventy-two million, six hundred twenty-eight thousand, nine hundred sixty-five".