28083984 has 40 divisors (see below), whose sum is σ = 72754272. Its totient is φ = 9335040.

The previous prime is 28083961. The next prime is 28084013. The reversal of 28083984 is 48938082.

It is a happy 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, 24447 + ... + 25569.

Almost surely, 2^28083984 is an apocalyptic number.

28083984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28083984 is an abundant number, since it is smaller than the sum of its proper divisors (44670288).

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

28083984 is a wasteful number, since it uses less digits than its factorization.

28083984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655 (or 1649 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 28083984 is about 5299.4324224392. The cubic root of 28083984 is about 303.9621952065.

It can be divided in two parts, 28083 and 984, that multiplied together give a palindrome (27633672).

The spelling of 28083984 in words is "twenty-eight million, eighty-three thousand, nine hundred eighty-four".