13102644 has 12 divisors (see below), whose sum is σ = 30572864. Its totient is φ = 4367544.

The previous prime is 13102633. The next prime is 13102651. The reversal of 13102644 is 44620131.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 13102644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545932 + ... + 545955.

Almost surely, 2^13102644 is an apocalyptic number.

It is an amenable number.

13102644 is an abundant number, since it is smaller than the sum of its proper divisors (17470220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13102644 is a wasteful number, since it uses less digits than its factorization.

13102644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091894 (or 1091892 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 13102644 is about 3619.7574504378. The cubic root of 13102644 is about 235.7506943104.

Adding to 13102644 its reverse (44620131), we get a palindrome (57722775).

The spelling of 13102644 in words is "thirteen million, one hundred two thousand, six hundred forty-four".