28569882 has 32 divisors (see below), whose sum is σ = 65617920. Its totient is φ = 8201520.

The previous prime is 28569869. The next prime is 28569889. The reversal of 28569882 is 28896582.

It is not an unprimeable number, because it can be changed into a prime (28569889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10138 + ... + 12645.

It is an arithmetic number, because the mean of its divisors is an integer number (2050560).

Almost surely, 2^28569882 is an apocalyptic number.

28569882 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28569882 is an abundant number, since it is smaller than the sum of its proper divisors (37048038).

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

28569882 is a wasteful number, since it uses less digits than its factorization.

28569882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22818.

The product of its digits is 552960, while the sum is 48.

The square root of 28569882 is about 5345.0801677805. The cubic root of 28569882 is about 305.7051925931.

The spelling of 28569882 in words is "twenty-eight million, five hundred sixty-nine thousand, eight hundred eighty-two".