13172090 has 32 divisors (see below), whose sum is σ = 25019280. Its totient is φ = 4985344.

The previous prime is 13172087. The next prime is 13172099. The reversal of 13172090 is 9027131.

It can be written as a sum of positive squares in 8 ways, for example, as 10426441 + 2745649 = 3229^2 + 1657^2 .

It is not an unprimeable number, because it can be changed into a prime (13172099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14942 + ... + 15798.

Almost surely, 2^13172090 is an apocalyptic number.

13172090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13172090 is a deficient number, since it is larger than the sum of its proper divisors (11847190).

13172090 is a wasteful number, since it uses less digits than its factorization.

13172090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 13172090 is about 3629.3374050920. The cubic root of 13172090 is about 236.1664654325.

The spelling of 13172090 in words is "thirteen million, one hundred seventy-two thousand, ninety".