28113184 has 24 divisors (see below), whose sum is σ = 60380208. Its totient is φ = 12778560.

The previous prime is 28113181. The next prime is 28113193. The reversal of 28113184 is 48131182.

It is a super-2 number, since 2×28113184² = 1580702229235712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28113181) 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, 39582 + ... + 40285.

It is an arithmetic number, because the mean of its divisors is an integer number (2515842).

Almost surely, 2^28113184 is an apocalyptic number.

It is an amenable number.

28113184 is an abundant number, since it is smaller than the sum of its proper divisors (32267024).

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

28113184 is a wasteful number, since it uses less digits than its factorization.

28113184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79888 (or 79880 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 28113184 is about 5302.1867187039. The cubic root of 28113184 is about 304.0675057843.

It can be divided in two parts, 2811 and 3184, that added together give a palindrome (5995).

The spelling of 28113184 in words is "twenty-eight million, one hundred thirteen thousand, one hundred eighty-four".