28933696 has 56 divisors (see below), whose sum is σ = 63605664. Its totient is φ = 12948480.

The previous prime is 28933693. The next prime is 28933733. The reversal of 28933696 is 69633982.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28933693) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 51111 + ... + 51673.

Almost surely, 2^28933696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28933696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31802832).

28933696 is an abundant number, since it is smaller than the sum of its proper divisors (34671968).

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

28933696 is a wasteful number, since it uses less digits than its factorization.

28933696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 649 counting only the distinct ones).

The product of its digits is 419904, while the sum is 46.

The square root of 28933696 is about 5379.0051124720. The cubic root of 28933696 is about 306.9973580394.

The spelling of 28933696 in words is "twenty-eight million, nine hundred thirty-three thousand, six hundred ninety-six".