28169024 has 28 divisors (see below), whose sum is σ = 60199524. Its totient is φ = 13000704.

The previous prime is 28168991. The next prime is 28169033. The reversal of 28169024 is 42096182.

It can be written as a sum of positive squares in 2 ways, for example, as 19360000 + 8809024 = 4400^2 + 2968^2 .

It is a super-2 number, since 2×28169024² = 1586987826225152, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16097 + ... + 17760.

It is an arithmetic number, because the mean of its divisors is an integer number (2149983).

Almost surely, 2^28169024 is an apocalyptic number.

It is an amenable number.

28169024 is an abundant number, since it is smaller than the sum of its proper divisors (32030500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28169024 is a wasteful number, since it uses less digits than its factorization.

28169024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33882 (or 33872 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28169024 is about 5307.4498584537. The cubic root of 28169024 is about 304.2686913475.

The spelling of 28169024 in words is "twenty-eight million, one hundred sixty-nine thousand, twenty-four".