13428730 has 32 divisors (see below), whose sum is σ = 28304640. Its totient is φ = 4490880.

The previous prime is 13428721. The next prime is 13428731. The reversal of 13428730 is 3782431.

It is not an unprimeable number, because it can be changed into a prime (13428731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531 + ... + 5209.

It is an arithmetic number, because the mean of its divisors is an integer number (884520).

Almost surely, 2^13428730 is an apocalyptic number.

13428730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13428730 is an abundant number, since it is smaller than the sum of its proper divisors (14875910).

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

13428730 is a wasteful number, since it uses less digits than its factorization.

13428730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4734.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 13428730 is about 3664.5231613404. The cubic root of 13428730 is about 237.6904031768.

The spelling of 13428730 in words is "thirteen million, four hundred twenty-eight thousand, seven hundred thirty".