28802169 has 32 divisors (see below), whose sum is σ = 47825280. Its totient is φ = 16977600.

The previous prime is 28802167. The next prime is 28802173. The reversal of 28802169 is 96120882.

It is not a de Polignac number, because 28802169 - 2¹ = 28802167 is a prime.

It is a super-2 number, since 2×28802169² = 1659129878209122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28802167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9679 + ... + 12299.

It is an arithmetic number, because the mean of its divisors is an integer number (1494540).

Almost surely, 2^28802169 is an apocalyptic number.

It is an amenable number.

28802169 is a deficient number, since it is larger than the sum of its proper divisors (19023111).

28802169 is a wasteful number, since it uses less digits than its factorization.

28802169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678 (or 2672 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 28802169 is about 5366.7652268382. The cubic root of 28802169 is about 306.5314677881.

The spelling of 28802169 in words is "twenty-eight million, eight hundred two thousand, one hundred sixty-nine".