28659169 has 12 divisors (see below), whose sum is σ = 36369648. Its totient is φ = 22331400.

The previous prime is 28659151. The next prime is 28659187. The reversal of 28659169 is 96195682.

It is an interprime number because it is at equal distance from previous prime (28659151) and next prime (28659187).

It is not a de Polignac number, because 28659169 - 2⁹ = 28658657 is a prime.

It is a super-2 number, since 2×28659169² = 1642695935541122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28659109) 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, 26047 + ... + 27124.

It is an arithmetic number, because the mean of its divisors is an integer number (3030804).

Almost surely, 2^28659169 is an apocalyptic number.

It is an amenable number.

28659169 is a deficient number, since it is larger than the sum of its proper divisors (7710479).

28659169 is a wasteful number, since it uses less digits than its factorization.

28659169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53196 (or 53189 counting only the distinct ones).

The product of its digits is 233280, while the sum is 46.

The square root of 28659169 is about 5353.4259124415. The cubic root of 28659169 is about 306.0233261441.

The spelling of 28659169 in words is "twenty-eight million, six hundred fifty-nine thousand, one hundred sixty-nine".