172144264 has 8 divisors (see below), whose sum is σ = 322770510. Its totient is φ = 86072128.

The previous prime is 172144249. The next prime is 172144267. The reversal of 172144264 is 462441271.

It can be written as a sum of positive squares in only one way, i.e., 130644900 + 41499364 = 11430^2 + 6442^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (172144267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10759009 + ... + 10759024.

Almost surely, 2^172144264 is an apocalyptic number.

It is an amenable number.

172144264 is a deficient number, since it is larger than the sum of its proper divisors (150626246).

172144264 is a wasteful number, since it uses less digits than its factorization.

172144264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21518039 (or 21518035 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 172144264 is about 13120.3759092489. The cubic root of 172144264 is about 556.2852167410.

The spelling of 172144264 in words is "one hundred seventy-two million, one hundred forty-four thousand, two hundred sixty-four".