13172308 has 12 divisors (see below), whose sum is σ = 23162272. Its totient is φ = 6554520.

The previous prime is 13172287. The next prime is 13172311. The reversal of 13172308 is 80327131.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6960 + ... + 8647.

Almost surely, 2^13172308 is an apocalyptic number.

It is an amenable number.

13172308 is a deficient number, since it is larger than the sum of its proper divisors (9989964).

13172308 is a wasteful number, since it uses less digits than its factorization.

13172308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15822 (or 15820 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 13172308 is about 3629.3674379980. The cubic root of 13172308 is about 236.1677682884.

Adding to 13172308 its reverse (80327131), we get a palindrome (93499439).

It can be divided in two parts, 13172 and 308, that multiplied together give a triangular number (4056976 = T₂₈₄₈).

The spelling of 13172308 in words is "thirteen million, one hundred seventy-two thousand, three hundred eight".