28184416 has 24 divisors (see below), whose sum is σ = 59757264. Its totient is φ = 13008000.

The previous prime is 28184413. The next prime is 28184437. The reversal of 28184416 is 61448182.

It is a super-2 number, since 2×28184416² = 1588722610522112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28184411) 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, 33460 + ... + 34291.

It is an arithmetic number, because the mean of its divisors is an integer number (2489886).

Almost surely, 2^28184416 is an apocalyptic number.

28184416 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28184416 is an abundant number, since it is smaller than the sum of its proper divisors (31572848).

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

28184416 is a wasteful number, since it uses less digits than its factorization.

28184416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67774 (or 67766 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 28184416 is about 5308.8996976775. The cubic root of 28184416 is about 304.3241003309.

The spelling of 28184416 in words is "twenty-eight million, one hundred eighty-four thousand, four hundred sixteen".