13161772 has 24 divisors (see below), whose sum is σ = 25012736. Its totient is φ = 6023808.

The previous prime is 13161769. The next prime is 13161793. The reversal of 13161772 is 27716131.

It is a self number, because there is not a number n which added to its sum of digits gives 13161772.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 5608 + ... + 7600.

Almost surely, 2^13161772 is an apocalyptic number.

It is an amenable number.

13161772 is a deficient number, since it is larger than the sum of its proper divisors (11850964).

13161772 is a wasteful number, since it uses less digits than its factorization.

13161772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137 (or 2135 counting only the distinct ones).

The product of its digits is 1764, while the sum is 28.

The square root of 13161772 is about 3627.9156550284. The cubic root of 13161772 is about 236.1047844559.

The spelling of 13161772 in words is "thirteen million, one hundred sixty-one thousand, seven hundred seventy-two".