28196790 has 32 divisors (see below), whose sum is σ = 67897440. Its totient is φ = 7494144.

The previous prime is 28196783. The next prime is 28196801. The reversal of 28196790 is 9769182.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8716 + ... + 11504.

It is an arithmetic number, because the mean of its divisors is an integer number (2121795).

Almost surely, 2^28196790 is an apocalyptic number.

28196790 is an abundant number, since it is smaller than the sum of its proper divisors (39700650).

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

28196790 is a wasteful number, since it uses less digits than its factorization.

28196790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3136.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 28196790 is about 5310.0649713539. The cubic root of 28196790 is about 304.3686303229.

The spelling of 28196790 in words is "twenty-eight million, one hundred ninety-six thousand, seven hundred ninety".