28963884 has 12 divisors (see below), whose sum is σ = 67582424. Its totient is φ = 9654624.

The previous prime is 28963873. The next prime is 28963919. The reversal of 28963884 is 48836982.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1206817 + ... + 1206840.

Almost surely, 2^28963884 is an apocalyptic number.

It is an amenable number.

28963884 is an abundant number, since it is smaller than the sum of its proper divisors (38618540).

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

28963884 is a wasteful number, since it uses less digits than its factorization.

28963884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413664 (or 2413662 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 28963884 is about 5381.8104760387. The cubic root of 28963884 is about 307.1040895930.

The spelling of 28963884 in words is "twenty-eight million, nine hundred sixty-three thousand, eight hundred eighty-four".