13089056 has 12 divisors (see below), whose sum is σ = 25769142. Its totient is φ = 6544512.

The previous prime is 13089019. The next prime is 13089059. The reversal of 13089056 is 65098031.

It can be written as a sum of positive squares in only one way, i.e., 12250000 + 839056 = 3500^2 + 916^2 .

It is a super-2 number, since 2×13089056² = 342646773942272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 409033 = 13089056 / (1 + 3 + 0 + 8 + 9 + 0 + 5 + 6).

It is not an unprimeable number, because it can be changed into a prime (13089059) by changing a digit.

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 as a sum of consecutive naturals, namely, 204485 + ... + 204548.

Almost surely, 2^13089056 is an apocalyptic number.

13089056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13089056 is a deficient number, since it is larger than the sum of its proper divisors (12680086).

13089056 is an equidigital number, since it uses as much as digits as its factorization.

13089056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409043 (or 409035 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 13089056 is about 3617.8800422347. The cubic root of 13089056 is about 235.6691716188.

The spelling of 13089056 in words is "thirteen million, eighty-nine thousand, fifty-six".