28799567 has 2 divisors, whose sum is σ = 28799568. Its totient is φ = 28799566.

The previous prime is 28799557. The next prime is 28799597. The reversal of 28799567 is 76599782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28799567 - 2⁸ = 28799311 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28799557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14399783 + 14399784.

It is an arithmetic number, because the mean of its divisors is an integer number (14399784).

Almost surely, 2^28799567 is an apocalyptic number.

28799567 is a deficient number, since it is larger than the sum of its proper divisors (1).

28799567 is an equidigital number, since it uses as much as digits as its factorization.

28799567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 53.

The square root of 28799567 is about 5366.5228034548. The cubic root of 28799567 is about 306.5222367831.

The spelling of 28799567 in words is "twenty-eight million, seven hundred ninety-nine thousand, five hundred sixty-seven".