28883664 has 60 divisors (see below), whose sum is σ = 81889600. Its totient is φ = 9502272.

The previous prime is 28883611. The next prime is 28883671. The reversal of 28883664 is 46638882.

It is a happy number.

28883664 is a `hidden beast` number, since 288 + 8 + 366 + 4 = 666.

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 11 ways as a sum of consecutive naturals, for example, 10107 + ... + 12645.

Almost surely, 2^28883664 is an apocalyptic number.

28883664 is a gapful number since it is divisible by the number (24) 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 28883664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40944800).

28883664 is an abundant number, since it is smaller than the sum of its proper divisors (53005936).

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

28883664 is a wasteful number, since it uses less digits than its factorization.

28883664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632 (or 2623 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 28883664 is about 5374.3524261068. The cubic root of 28883664 is about 306.8203031892.

The spelling of 28883664 in words is "twenty-eight million, eight hundred eighty-three thousand, six hundred sixty-four".