28168192 has 78 divisors (see below), whose sum is σ = 63414722. Its totient is φ = 12435456.

The previous prime is 28168187. The next prime is 28168199. The reversal of 28168192 is 29186182.

It can be written as a sum of positive squares in only one way, i.e., 19501056 + 8667136 = 4416^2 + 2944^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28168199) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1224693 + ... + 1224715.

Almost surely, 2^28168192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28168192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31707361).

28168192 is an abundant number, since it is smaller than the sum of its proper divisors (35246530).

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

28168192 is an equidigital number, since it uses as much as digits as its factorization.

28168192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 38 counting only the distinct ones).

The product of its digits is 13824, while the sum is 37.

The square root of 28168192 is about 5307.3714774830. The cubic root of 28168192 is about 304.2656956924.

The spelling of 28168192 in words is "twenty-eight million, one hundred sixty-eight thousand, one hundred ninety-two".