28886884 has 24 divisors (see below), whose sum is σ = 55711040. Its totient is φ = 13021344.

The previous prime is 28886881. The next prime is 28886887. The reversal of 28886884 is 48868882.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28886881) and next prime (28886887).

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28886881) 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, 4224 + ... + 8695.

Almost surely, 2^28886884 is an apocalyptic number.

It is an amenable number.

28886884 is a deficient number, since it is larger than the sum of its proper divisors (26824156).

28886884 is a wasteful number, since it uses less digits than its factorization.

28886884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12979 (or 12977 counting only the distinct ones).

The product of its digits is 1572864, while the sum is 52.

The square root of 28886884 is about 5374.6519887338. The cubic root of 28886884 is about 306.8317043820.

The spelling of 28886884 in words is "twenty-eight million, eight hundred eighty-six thousand, eight hundred eighty-four".