28855884 has 24 divisors (see below), whose sum is σ = 67431168. Its totient is φ = 9604240.

The previous prime is 28855877. The next prime is 28855901. The reversal of 28855884 is 48855882.

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, 9289 + ... + 11999.

It is an arithmetic number, because the mean of its divisors is an integer number (2809632).

Almost surely, 2^28855884 is an apocalyptic number.

It is an amenable number.

28855884 is an abundant number, since it is smaller than the sum of its proper divisors (38575284).

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

28855884 is a wasteful number, since it uses less digits than its factorization.

28855884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605 (or 3603 counting only the distinct ones).

The product of its digits is 819200, while the sum is 48.

The square root of 28855884 is about 5371.7673069484. The cubic root of 28855884 is about 306.7219061382.

The spelling of 28855884 in words is "twenty-eight million, eight hundred fifty-five thousand, eight hundred eighty-four".