172928966 has 16 divisors (see below), whose sum is σ = 299330304. Its totient is φ = 73392264.

The previous prime is 172928963. The next prime is 172928971. The reversal of 172928966 is 669829271.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172928963) 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, 58520 + ... + 61403.

It is an arithmetic number, because the mean of its divisors is an integer number (18708144).

Almost surely, 2^172928966 is an apocalyptic number.

172928966 is a deficient number, since it is larger than the sum of its proper divisors (126401338).

172928966 is a wasteful number, since it uses less digits than its factorization.

172928966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120035.

The product of its digits is 653184, while the sum is 50.

The square root of 172928966 is about 13150.2458532151. The cubic root of 172928966 is about 557.1291920445.

The spelling of 172928966 in words is "one hundred seventy-two million, nine hundred twenty-eight thousand, nine hundred sixty-six".