28089842 has 16 divisors (see below), whose sum is σ = 46442592. Its totient is φ = 12635520.

The previous prime is 28089833. The next prime is 28089857. The reversal of 28089842 is 24898082.

It is a self number, because there is not a number n which added to its sum of digits gives 28089842.

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, 4448 + ... + 8715.

It is an arithmetic number, because the mean of its divisors is an integer number (2902662).

Almost surely, 2^28089842 is an apocalyptic number.

28089842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28089842 is a deficient number, since it is larger than the sum of its proper divisors (18352750).

28089842 is a wasteful number, since it uses less digits than its factorization.

28089842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13273.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 28089842 is about 5299.9850943187. The cubic root of 28089842 is about 303.9833280908.

The spelling of 28089842 in words is "twenty-eight million, eighty-nine thousand, eight hundred forty-two".