15428713 has 2 divisors, whose sum is σ = 15428714. Its totient is φ = 15428712.

The previous prime is 15428687. The next prime is 15428717. The reversal of 15428713 is 31782451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10575504 + 4853209 = 3252^2 + 2203^2 .

It is an emirp because it is prime and its reverse (31782451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15428713 - 2⁹ = 15428201 is a prime.

It is not a weakly prime, because it can be changed into another prime (15428717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7714356 + 7714357.

It is an arithmetic number, because the mean of its divisors is an integer number (7714357).

Almost surely, 2^15428713 is an apocalyptic number.

It is an amenable number.

15428713 is a deficient number, since it is larger than the sum of its proper divisors (1).

15428713 is an equidigital number, since it uses as much as digits as its factorization.

15428713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 15428713 is about 3927.9400453673. The cubic root of 15428713 is about 248.9487214502.

The spelling of 15428713 in words is "fifteen million, four hundred twenty-eight thousand, seven hundred thirteen".