13128292 has 12 divisors (see below), whose sum is σ = 23102716. Its totient is φ = 6527520.

The previous prime is 13128289. The next prime is 13128293. The reversal of 13128292 is 29282131.

It can be written as a sum of positive squares in 2 ways, for example, as 1999396 + 11128896 = 1414^2 + 3336^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13128292.

It is not an unprimeable number, because it can be changed into a prime (13128293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8343 + ... + 9790.

Almost surely, 2^13128292 is an apocalyptic number.

It is an amenable number.

13128292 is a deficient number, since it is larger than the sum of its proper divisors (9974424).

13128292 is a wasteful number, since it uses less digits than its factorization.

13128292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18318 (or 18316 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 13128292 is about 3623.2984972260. The cubic root of 13128292 is about 235.9044188257.

It can be divided in two parts, 1312 and 8292, that added together give a square (9604 = 98²).

The spelling of 13128292 in words is "thirteen million, one hundred twenty-eight thousand, two hundred ninety-two".