28184460 has 48 divisors (see below), whose sum is σ = 79634016. Its totient is φ = 7447552.

The previous prime is 28184459. The next prime is 28184461. The reversal of 28184460 is 6448182.

It is an interprime number because it is at equal distance from previous prime (28184459) and next prime (28184461).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28184461) 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 15 ways as a sum of consecutive naturals, for example, 4702 + ... + 8858.

It is an arithmetic number, because the mean of its divisors is an integer number (1659042).

Almost surely, 2^28184460 is an apocalyptic number.

28184460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28184460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39817008).

28184460 is an abundant number, since it is smaller than the sum of its proper divisors (51449556).

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

28184460 is a wasteful number, since it uses less digits than its factorization.

28184460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4282 (or 4280 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 28184460 is about 5308.9038416607. The cubic root of 28184460 is about 304.3242586956.

The spelling of 28184460 in words is "twenty-eight million, one hundred eighty-four thousand, four hundred sixty".