28383216 has 20 divisors (see below), whose sum is σ = 73323432. Its totient is φ = 9461056.

The previous prime is 28383191. The next prime is 28383221. The reversal of 28383216 is 61238382.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295611 + ... + 295706.

Almost surely, 2^28383216 is an apocalyptic number.

It is an amenable number.

28383216 is an abundant number, since it is smaller than the sum of its proper divisors (44940216).

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

28383216 is a wasteful number, since it uses less digits than its factorization.

28383216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591328 (or 591322 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 28383216 is about 5327.5900743207. The cubic root of 28383216 is about 305.0379456507.

The spelling of 28383216 in words is "twenty-eight million, three hundred eighty-three thousand, two hundred sixteen".