13417728 has 36 divisors (see below), whose sum is σ = 35712768. Its totient is φ = 4472320.

The previous prime is 13417727. The next prime is 13417741. The reversal of 13417728 is 82771431.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13417727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7968 + ... + 9503.

Almost surely, 2^13417728 is an apocalyptic number.

It is an amenable number.

13417728 is an abundant number, since it is smaller than the sum of its proper divisors (22295040).

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

13417728 is an equidigital number, since it uses as much as digits as its factorization.

13417728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17490 (or 17476 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 13417728 is about 3663.0217034574. The cubic root of 13417728 is about 237.6254731274.

The spelling of 13417728 in words is "thirteen million, four hundred seventeen thousand, seven hundred twenty-eight".