28642959 has 12 divisors (see below), whose sum is σ = 41839200. Its totient is φ = 18880224.

The previous prime is 28642931. The next prime is 28642963. The reversal of 28642959 is 95924682.

It is not a de Polignac number, because 28642959 - 2⁵ = 28642927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28642919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17079 + ... + 18680.

It is an arithmetic number, because the mean of its divisors is an integer number (3486600).

Almost surely, 2^28642959 is an apocalyptic number.

28642959 is a deficient number, since it is larger than the sum of its proper divisors (13196241).

28642959 is a wasteful number, since it uses less digits than its factorization.

28642959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35854 (or 35851 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 28642959 is about 5351.9117145185. The cubic root of 28642959 is about 305.9656183337.

The spelling of 28642959 in words is "twenty-eight million, six hundred forty-two thousand, nine hundred fifty-nine".