28195782 has 16 divisors (see below), whose sum is σ = 57767472. Its totient is φ = 9169280.

The previous prime is 28195781. The next prime is 28195807. The reversal of 28195782 is 28759182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28195781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57063 + ... + 57554.

It is an arithmetic number, because the mean of its divisors is an integer number (3610467).

Almost surely, 2^28195782 is an apocalyptic number.

28195782 is an abundant number, since it is smaller than the sum of its proper divisors (29571690).

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

28195782 is a wasteful number, since it uses less digits than its factorization.

28195782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114663.

The product of its digits is 80640, while the sum is 42.

The square root of 28195782 is about 5309.9700564127. The cubic root of 28195782 is about 304.3650033470.

The spelling of 28195782 in words is "twenty-eight million, one hundred ninety-five thousand, seven hundred eighty-two".