28113192 has 96 divisors (see below), whose sum is σ = 79939080. Its totient is φ = 8916480.

The previous prime is 28113181. The next prime is 28113193. The reversal of 28113192 is 29131182.

It can be written as a sum of positive squares in 4 ways, for example, as 26687556 + 1425636 = 5166^2 + 1194^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28113193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162418 + ... + 162590.

Almost surely, 2^28113192 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 28113192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39969540).

28113192 is an abundant number, since it is smaller than the sum of its proper divisors (51825888).

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

28113192 is a wasteful number, since it uses less digits than its factorization.

28113192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 276 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 28113192 is about 5302.1874731096. The cubic root of 28113192 is about 304.0675346265.

The spelling of 28113192 in words is "twenty-eight million, one hundred thirteen thousand, one hundred ninety-two".