13400424 has 32 divisors (see below), whose sum is σ = 37224000. Its totient is φ = 4466736.

The previous prime is 13400417. The next prime is 13400441. The reversal of 13400424 is 42400431.

13400424 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13400397 and 13400406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30804 + ... + 31235.

It is an arithmetic number, because the mean of its divisors is an integer number (1163250).

Almost surely, 2^13400424 is an apocalyptic number.

It is an amenable number.

13400424 is an abundant number, since it is smaller than the sum of its proper divisors (23823576).

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

13400424 is a wasteful number, since it uses less digits than its factorization.

13400424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62054 (or 62044 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 13400424 is about 3660.6589570732. The cubic root of 13400424 is about 237.5232789740.

Adding to 13400424 its reverse (42400431), we get a palindrome (55800855).

It can be divided in two parts, 13400 and 424, that added together give a cube (13824 = 24³).

The spelling of 13400424 in words is "thirteen million, four hundred thousand, four hundred twenty-four".