28838886 has 32 divisors (see below), whose sum is σ = 58732800. Its totient is φ = 9439200.

The previous prime is 28838861. The next prime is 28838923. The reversal of 28838886 is 68883882.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 125820 + ... + 126048.

It is an arithmetic number, because the mean of its divisors is an integer number (1835400).

Almost surely, 2^28838886 is an apocalyptic number.

28838886 is an abundant number, since it is smaller than the sum of its proper divisors (29893914).

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

28838886 is a wasteful number, since it uses less digits than its factorization.

28838886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524.

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

The square root of 28838886 is about 5370.1849130174. The cubic root of 28838886 is about 306.6616678979.

The spelling of 28838886 in words is "twenty-eight million, eight hundred thirty-eight thousand, eight hundred eighty-six".