28888886 has 16 divisors (see below), whose sum is σ = 46872000. Its totient is φ = 13274688.

The previous prime is 28888883. The next prime is 28888889. The reversal of 28888886 is 68888882.

It is an interprime number because it is at equal distance from previous prime (28888883) and next prime (28888889).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28888883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3890 + ... + 8538.

It is an arithmetic number, because the mean of its divisors is an integer number (2929500).

Almost surely, 2^28888886 is an apocalyptic number.

28888886 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28888886 is a deficient number, since it is larger than the sum of its proper divisors (17983114).

28888886 is a wasteful number, since it uses less digits than its factorization.

28888886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4903.

The product of its digits is 3145728, while the sum is 56.

The square root of 28888886 is about 5374.8382301238. The cubic root of 28888886 is about 306.8387925226.

It can be divided in two parts, 2 and 8888886, that added together give a palindrome (8888888).

The spelling of 28888886 in words is "twenty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-six".