13172288 has 14 divisors (see below), whose sum is σ = 26138886. Its totient is φ = 6586112.

The previous prime is 13172287. The next prime is 13172311. The reversal of 13172288 is 88227131.

It can be written as a sum of positive squares in only one way, i.e., 11075584 + 2096704 = 3328^2 + 1448^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (13172287) 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, 102845 + ... + 102972.

Almost surely, 2^13172288 is an apocalyptic number.

It is an amenable number.

13172288 is a deficient number, since it is larger than the sum of its proper divisors (12966598).

13172288 is an equidigital number, since it uses as much as digits as its factorization.

13172288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205829 (or 205819 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The square root of 13172288 is about 3629.3646826959. The cubic root of 13172288 is about 236.1676487609.

The spelling of 13172288 in words is "thirteen million, one hundred seventy-two thousand, two hundred eighty-eight".