15428563 has 2 divisors, whose sum is σ = 15428564. Its totient is φ = 15428562.

The previous prime is 15428557. The next prime is 15428573. The reversal of 15428563 is 36582451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15428563 - 2⁹ = 15428051 is a prime.

It is not a weakly prime, because it can be changed into another prime (15428573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7714281 + 7714282.

It is an arithmetic number, because the mean of its divisors is an integer number (7714282).

Almost surely, 2^15428563 is an apocalyptic number.

15428563 is a deficient number, since it is larger than the sum of its proper divisors (1).

15428563 is an equidigital number, since it uses as much as digits as its factorization.

15428563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 34.

The square root of 15428563 is about 3927.9209513431. The cubic root of 15428563 is about 248.9479146767.

The spelling of 15428563 in words is "fifteen million, four hundred twenty-eight thousand, five hundred sixty-three".