28568503 has 2 divisors, whose sum is σ = 28568504. Its totient is φ = 28568502.

The previous prime is 28568479. The next prime is 28568543. The reversal of 28568503 is 30586582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28568503 - 2⁵ = 28568471 is a prime.

It is a super-2 number, since 2×28568503² = 1632318727322018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28568543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14284251 + 14284252.

It is an arithmetic number, because the mean of its divisors is an integer number (14284252).

Almost surely, 2^28568503 is an apocalyptic number.

28568503 is a deficient number, since it is larger than the sum of its proper divisors (1).

28568503 is an equidigital number, since it uses as much as digits as its factorization.

28568503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 28568503 is about 5344.9511690941. The cubic root of 28568503 is about 305.7002739607.

The spelling of 28568503 in words is "twenty-eight million, five hundred sixty-eight thousand, five hundred three".