28168892 has 12 divisors (see below), whose sum is σ = 49591920. Its totient is φ = 13999776.

The previous prime is 28168891. The next prime is 28168909. The reversal of 28168892 is 29886182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28168891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20417 + ... + 21752.

It is an arithmetic number, because the mean of its divisors is an integer number (4132660).

Almost surely, 2^28168892 is an apocalyptic number.

It is an amenable number.

28168892 is a deficient number, since it is larger than the sum of its proper divisors (21423028).

28168892 is a wasteful number, since it uses less digits than its factorization.

28168892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42340 (or 42338 counting only the distinct ones).

The product of its digits is 110592, while the sum is 44.

The square root of 28168892 is about 5307.4374230885. The cubic root of 28168892 is about 304.2682160793.

The spelling of 28168892 in words is "twenty-eight million, one hundred sixty-eight thousand, eight hundred ninety-two".