28383616 has 16 divisors (see below), whose sum is σ = 56545740. Its totient is φ = 14191744.

The previous prime is 28383601. The next prime is 28383637. The reversal of 28383616 is 61638382.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110746 + ... + 111001.

Almost surely, 2^28383616 is an apocalyptic number.

It is an amenable number.

28383616 is a deficient number, since it is larger than the sum of its proper divisors (28162124).

28383616 is an equidigital number, since it uses as much as digits as its factorization.

28383616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221761 (or 221749 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 28383616 is about 5327.6276146142. The cubic root of 28383616 is about 305.0393785938.

The spelling of 28383616 in words is "twenty-eight million, three hundred eighty-three thousand, six hundred sixteen".