28890599 has 16 divisors (see below), whose sum is σ = 32799168. Its totient is φ = 25293312.

The previous prime is 28890593. The next prime is 28890611. The reversal of 28890599 is 99509882.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28890599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28890593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13469 + ... + 15465.

It is an arithmetic number, because the mean of its divisors is an integer number (2049948).

Almost surely, 2^28890599 is an apocalyptic number.

28890599 is a deficient number, since it is larger than the sum of its proper divisors (3908569).

28890599 is a wasteful number, since it uses less digits than its factorization.

28890599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074.

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 28890599 is about 5374.9975813948. The cubic root of 28890599 is about 306.8448571901.

The spelling of 28890599 in words is "twenty-eight million, eight hundred ninety thousand, five hundred ninety-nine".