28194850 has 12 divisors (see below), whose sum is σ = 52442514. Its totient is φ = 11277920.

The previous prime is 28194809. The next prime is 28194853. The reversal of 28194850 is 5849182.

It can be written as a sum of positive squares in 3 ways, for example, as 25030009 + 3164841 = 5003^2 + 1779^2 .

It is not an unprimeable number, because it can be changed into a prime (28194853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 281899 + ... + 281998.

Almost surely, 2^28194850 is an apocalyptic number.

28194850 is a deficient number, since it is larger than the sum of its proper divisors (24247664).

28194850 is a wasteful number, since it uses less digits than its factorization.

28194850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563909 (or 563904 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 28194850 is about 5309.8822962473. The cubic root of 28194850 is about 304.3616497566.

The spelling of 28194850 in words is "twenty-eight million, one hundred ninety-four thousand, eight hundred fifty".