28649028659 has 16 divisors (see below), whose sum is σ = 28973598912. Its totient is φ = 28326924288.

The previous prime is 28649028641. The next prime is 28649028679. The reversal of 28649028659 is 95682094682.

It is a cyclic number.

It is not a de Polignac number, because 28649028659 - 2²⁴ = 28632251443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28649028598 and 28649028607.

It is not an unprimeable number, because it can be changed into a prime (28649028679) 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, 39084257 + ... + 39084989.

It is an arithmetic number, because the mean of its divisors is an integer number (1810849932).

Almost surely, 2^28649028659 is an apocalyptic number.

28649028659 is a deficient number, since it is larger than the sum of its proper divisors (324570253).

28649028659 is a wasteful number, since it uses less digits than its factorization.

28649028659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886.

The product of its (nonzero) digits is 14929920, while the sum is 59.

The spelling of 28649028659 in words is "twenty-eight billion, six hundred forty-nine million, twenty-eight thousand, six hundred fifty-nine".