13289992 has 8 divisors (see below), whose sum is σ = 24918750. Its totient is φ = 6644992.

The previous prime is 13289989. The next prime is 13289999. The reversal of 13289992 is 29998231.

It can be written as a sum of positive squares in only one way, i.e., 11737476 + 1552516 = 3426^2 + 1246^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13289999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830617 + ... + 830632.

Almost surely, 2^13289992 is an apocalyptic number.

It is an amenable number.

13289992 is a deficient number, since it is larger than the sum of its proper divisors (11628758).

13289992 is a wasteful number, since it uses less digits than its factorization.

13289992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661255 (or 1661251 counting only the distinct ones).

The product of its digits is 69984, while the sum is 43.

The square root of 13289992 is about 3645.5441294819. The cubic root of 13289992 is about 236.8690072349.

The spelling of 13289992 in words is "thirteen million, two hundred eighty-nine thousand, nine hundred ninety-two".