13428784 has 20 divisors (see below), whose sum is σ = 26446720. Its totient is φ = 6603840.

The previous prime is 13428773. The next prime is 13428809. The reversal of 13428784 is 48782431.

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, 5904 + ... + 7855.

It is an arithmetic number, because the mean of its divisors is an integer number (1322336).

Almost surely, 2^13428784 is an apocalyptic number.

It is an amenable number.

13428784 is a deficient number, since it is larger than the sum of its proper divisors (13017936).

13428784 is a wasteful number, since it uses less digits than its factorization.

13428784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13828 (or 13822 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 13428784 is about 3664.5305292766. The cubic root of 13428784 is about 237.6907217789.

The spelling of 13428784 in words is "thirteen million, four hundred twenty-eight thousand, seven hundred eighty-four".