13369728 has 64 divisors (see below), whose sum is σ = 36511920. Its totient is φ = 4331520.

The previous prime is 13369717. The next prime is 13369747. The reversal of 13369728 is 82796331.

It is a tau number, because it is divible by the number of its divisors (64).

It is a zygodrome in base 2.

It is a congruent number.

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, 13738 + ... + 14678.

Almost surely, 2^13369728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13369728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18255960).

13369728 is an abundant number, since it is smaller than the sum of its proper divisors (23142192).

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

13369728 is an equidigital number, since it uses as much as digits as its factorization.

13369728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995 (or 983 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 13369728 is about 3656.4638655400. The cubic root of 13369728 is about 237.3417775334.

The spelling of 13369728 in words is "thirteen million, three hundred sixty-nine thousand, seven hundred twenty-eight".