28189662 has 16 divisors (see below), whose sum is σ = 56564352. Its totient is φ = 9365720.

The previous prime is 28189657. The next prime is 28189703. The reversal of 28189662 is 26698182.

It is a congruent number.

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, 5688 + ... + 9419.

It is an arithmetic number, because the mean of its divisors is an integer number (3535272).

Almost surely, 2^28189662 is an apocalyptic number.

28189662 is an abundant number, since it is smaller than the sum of its proper divisors (28374690).

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

28189662 is a wasteful number, since it uses less digits than its factorization.

28189662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15423.

The product of its digits is 82944, while the sum is 42.

The square root of 28189662 is about 5309.3937507026. The cubic root of 28189662 is about 304.3429805659.

The spelling of 28189662 in words is "twenty-eight million, one hundred eighty-nine thousand, six hundred sixty-two".