12993544 has 8 divisors (see below), whose sum is σ = 24362910. Its totient is φ = 6496768.

The previous prime is 12993509. The next prime is 12993571. The reversal of 12993544 is 44539921.

It can be written as a sum of positive squares in only one way, i.e., 12517444 + 476100 = 3538^2 + 690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812089 + ... + 812104.

Almost surely, 2^12993544 is an apocalyptic number.

It is an amenable number.

12993544 is a deficient number, since it is larger than the sum of its proper divisors (11369366).

12993544 is a wasteful number, since it uses less digits than its factorization.

12993544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624199 (or 1624195 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 12993544 is about 3604.6558781665. The cubic root of 12993544 is about 235.0945386943.

The spelling of 12993544 in words is "twelve million, nine hundred ninety-three thousand, five hundred forty-four".