13091648 has 14 divisors (see below), whose sum is σ = 25978866. Its totient is φ = 6545792.

The previous prime is 13091629. The next prime is 13091677. The reversal of 13091648 is 84619031.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13017664 + 73984 = 3608^2 + 272^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102215 + ... + 102342.

Almost surely, 2^13091648 is an apocalyptic number.

It is an amenable number.

13091648 is a deficient number, since it is larger than the sum of its proper divisors (12887218).

13091648 is an equidigital number, since it uses as much as digits as its factorization.

13091648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204569 (or 204559 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 13091648 is about 3618.2382453343. The cubic root of 13091648 is about 235.6847269594.

The spelling of 13091648 in words is "thirteen million, ninety-one thousand, six hundred forty-eight".