28892169 has 24 divisors (see below), whose sum is σ = 42981120. Its totient is φ = 18692928.

The previous prime is 28892137. The next prime is 28892183. The reversal of 28892169 is 96129882.

It is not a de Polignac number, because 28892169 - 2⁵ = 28892137 is a prime.

It is a super-2 number, since 2×28892169² = 1669514859049122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28892069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70437 + ... + 70845.

It is an arithmetic number, because the mean of its divisors is an integer number (1790880).

Almost surely, 2^28892169 is an apocalyptic number.

It is an amenable number.

28892169 is a deficient number, since it is larger than the sum of its proper divisors (14088951).

28892169 is a wasteful number, since it uses less digits than its factorization.

28892169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 626 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 28892169 is about 5375.1436259881. The cubic root of 28892169 is about 306.8504153730.

The spelling of 28892169 in words is "twenty-eight million, eight hundred ninety-two thousand, one hundred sixty-nine".