28599689 has 2 divisors, whose sum is σ = 28599690. Its totient is φ = 28599688.

The previous prime is 28599679. The next prime is 28599733. The reversal of 28599689 is 98699582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28249225 + 350464 = 5315^2 + 592^2 .

It is a cyclic number.

It is not a de Polignac number, because 28599689 - 2⁸ = 28599433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28599679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14299844 + 14299845.

It is an arithmetic number, because the mean of its divisors is an integer number (14299845).

Almost surely, 2^28599689 is an apocalyptic number.

It is an amenable number.

28599689 is a deficient number, since it is larger than the sum of its proper divisors (1).

28599689 is an equidigital number, since it uses as much as digits as its factorization.

28599689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 56.

The square root of 28599689 is about 5347.8677059179. The cubic root of 28599689 is about 305.8114698680.

The spelling of 28599689 in words is "twenty-eight million, five hundred ninety-nine thousand, six hundred eighty-nine".