12993885 has 32 divisors (see below), whose sum is σ = 23904000. Its totient is φ = 6689088.

The previous prime is 12993863. The next prime is 12993887. The reversal of 12993885 is 58839921.

It is a happy number.

12993885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12993885 - 2⁶ = 12993821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12993885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12993887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2256 + ... + 5574.

It is an arithmetic number, because the mean of its divisors is an integer number (747000).

Almost surely, 2^12993885 is an apocalyptic number.

12993885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12993885 is a deficient number, since it is larger than the sum of its proper divisors (10910115).

12993885 is a wasteful number, since it uses less digits than its factorization.

12993885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362 (or 3356 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 12993885 is about 3604.7031777943. The cubic root of 12993885 is about 235.0965952678.

It can be divided in two parts, 1299 and 3885, that added together give a square (5184 = 72²).

The spelling of 12993885 in words is "twelve million, nine hundred ninety-three thousand, eight hundred eighty-five".