13419728 has 30 divisors (see below), whose sum is σ = 30247506. Its totient is φ = 5750976.

The previous prime is 13419713. The next prime is 13419737. The reversal of 13419728 is 82791431.

It can be written as a sum of positive squares in only one way, i.e., 6927424 + 6492304 = 2632^2 + 2548^2 .

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, 7775 + ... + 9342.

Almost surely, 2^13419728 is an apocalyptic number.

It is an amenable number.

13419728 is an abundant number, since it is smaller than the sum of its proper divisors (16827778).

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

13419728 is a wasteful number, since it uses less digits than its factorization.

13419728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17139 (or 17126 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 13419728 is about 3663.2946919406. The cubic root of 13419728 is about 237.6372790838.

The spelling of 13419728 in words is "thirteen million, four hundred nineteen thousand, seven hundred twenty-eight".