13400824 has 16 divisors (see below), whose sum is σ = 25481520. Its totient is φ = 6605760.

The previous prime is 13400801. The next prime is 13400831. The reversal of 13400824 is 42800431.

It is a junction number, because it is equal to n+sod(n) for n = 13400795 and 13400804.

It is a congruent number.

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, 11229 + ... + 12364.

It is an arithmetic number, because the mean of its divisors is an integer number (1592595).

Almost surely, 2^13400824 is an apocalyptic number.

It is an amenable number.

13400824 is a deficient number, since it is larger than the sum of its proper divisors (12080696).

13400824 is a wasteful number, since it uses less digits than its factorization.

13400824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23670 (or 23666 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 13400824 is about 3660.7135916376. The cubic root of 13400824 is about 237.5256422914.

The spelling of 13400824 in words is "thirteen million, four hundred thousand, eight hundred twenty-four".