11993644 has 12 divisors (see below), whose sum is σ = 22603504. Its totient is φ = 5535504.

The previous prime is 11993593. The next prime is 11993659. The reversal of 11993644 is 44639911.

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, 115272 + ... + 115375.

Almost surely, 2^11993644 is an apocalyptic number.

It is an amenable number.

11993644 is a deficient number, since it is larger than the sum of its proper divisors (10609860).

11993644 is a wasteful number, since it uses less digits than its factorization.

11993644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230664 (or 230662 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 11993644 is about 3463.1840840475. The cubic root of 11993644 is about 228.9024202402.

The spelling of 11993644 in words is "eleven million, nine hundred ninety-three thousand, six hundred forty-four".