28883886 has 16 divisors (see below), whose sum is σ = 57831168. Its totient is φ = 9617400.

The previous prime is 28883861. The next prime is 28883891. The reversal of 28883886 is 68838882.

It is a congruent 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, 4971 + ... + 9081.

It is an arithmetic number, because the mean of its divisors is an integer number (3614448).

Almost surely, 2^28883886 is an apocalyptic number.

28883886 is an abundant number, since it is smaller than the sum of its proper divisors (28947282).

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

28883886 is a wasteful number, since it uses less digits than its factorization.

28883886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5287.

The product of its digits is 1179648, while the sum is 51.

The square root of 28883886 is about 5374.3730797182. The cubic root of 28883886 is about 306.8210892614.

It can be divided in two parts, 2 and 8883886, that added together give a palindrome (8883888).

The spelling of 28883886 in words is "twenty-eight million, eight hundred eighty-three thousand, eight hundred eighty-six".