28313184 has 48 divisors (see below), whose sum is σ = 77559552. Its totient is φ = 9026688.

The previous prime is 28313179. The next prime is 28313191. The reversal of 28313184 is 48131382.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4204 + ... + 8619.

It is an arithmetic number, because the mean of its divisors is an integer number (1615824).

Almost surely, 2^28313184 is an apocalyptic number.

28313184 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28313184 is an abundant number, since it is smaller than the sum of its proper divisors (49246368).

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

28313184 is a wasteful number, since it uses less digits than its factorization.

28313184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12859 (or 12851 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 28313184 is about 5321.0134373068. The cubic root of 28313184 is about 304.7868581627.

The spelling of 28313184 in words is "twenty-eight million, three hundred thirteen thousand, one hundred eighty-four".