12993408 has 48 divisors (see below), whose sum is σ = 37393200. Its totient is φ = 4330752.

The previous prime is 12993391. The next prime is 12993419. The reversal of 12993408 is 80439921.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4488 + ... + 6791.

It is an arithmetic number, because the mean of its divisors is an integer number (779025).

Almost surely, 2^12993408 is an apocalyptic number.

12993408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12993408 is an abundant number, since it is smaller than the sum of its proper divisors (24399792).

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

12993408 is a wasteful number, since it uses less digits than its factorization.

12993408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11299 (or 11284 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 12993408 is about 3604.6370136256. The cubic root of 12993408 is about 235.0937184672.

The spelling of 12993408 in words is "twelve million, nine hundred ninety-three thousand, four hundred eight".