28573899 has 4 divisors (see below), whose sum is σ = 38098536. Its totient is φ = 19049264.

The previous prime is 28573873. The next prime is 28573901. The reversal of 28573899 is 99837582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28573899 - 2⁷ = 28573771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28573819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4762314 + ... + 4762319.

It is an arithmetic number, because the mean of its divisors is an integer number (9524634).

Almost surely, 2^28573899 is an apocalyptic number.

28573899 is a deficient number, since it is larger than the sum of its proper divisors (9524637).

28573899 is an equidigital number, since it uses as much as digits as its factorization.

28573899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9524636.

The product of its digits is 1088640, while the sum is 51.

The square root of 28573899 is about 5345.4559206863. The cubic root of 28573899 is about 305.7195195711.

The spelling of 28573899 in words is "twenty-eight million, five hundred seventy-three thousand, eight hundred ninety-nine".