13171992 has 16 divisors (see below), whose sum is σ = 32930040. Its totient is φ = 4390656.

The previous prime is 13171987. The next prime is 13172023. The reversal of 13171992 is 29917131.

13171992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274393 + ... + 274440.

Almost surely, 2^13171992 is an apocalyptic number.

13171992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13171992 is an abundant number, since it is smaller than the sum of its proper divisors (19758048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13171992 is a wasteful number, since it uses less digits than its factorization.

13171992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548842 (or 548838 counting only the distinct ones).

The product of its digits is 3402, while the sum is 33.

The square root of 13171992 is about 3629.3239039799. The cubic root of 13171992 is about 236.1658797403.

The spelling of 13171992 in words is "thirteen million, one hundred seventy-one thousand, nine hundred ninety-two".