13145644 has 12 divisors (see below), whose sum is σ = 24215800. Its totient is φ = 6226848.

The previous prime is 13145617. The next prime is 13145651. The reversal of 13145644 is 44654131.

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, 86409 + ... + 86560.

Almost surely, 2^13145644 is an apocalyptic number.

It is an amenable number.

13145644 is a deficient number, since it is larger than the sum of its proper divisors (11070156).

13145644 is a wasteful number, since it uses less digits than its factorization.

13145644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172992 (or 172990 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 13145644 is about 3625.6922097718. The cubic root of 13145644 is about 236.0083067075.

Adding to 13145644 its reverse (44654131), we get a palindrome (57799775).

The spelling of 13145644 in words is "thirteen million, one hundred forty-five thousand, six hundred forty-four".