28086402 has 16 divisors (see below), whose sum is σ = 56229120. Its totient is φ = 9352752.

The previous prime is 28086391. The next prime is 28086433. The reversal of 28086402 is 20468082.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28086402.

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, 7008 + ... + 10260.

It is an arithmetic number, because the mean of its divisors is an integer number (3514320).

Almost surely, 2^28086402 is an apocalyptic number.

28086402 is an abundant number, since it is smaller than the sum of its proper divisors (28142718).

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

28086402 is a wasteful number, since it uses less digits than its factorization.

28086402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4697.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 28086402 is about 5299.6605551677. The cubic root of 28086402 is about 303.9709185593.

The spelling of 28086402 in words is "twenty-eight million, eighty-six thousand, four hundred two".