28185796 has 24 divisors (see below), whose sum is σ = 54031320. Its totient is φ = 12805632.

The previous prime is 28185791. The next prime is 28185799. The reversal of 28185796 is 69758182.

It can be written as a sum of positive squares in 4 ways, for example, as 1000000 + 27185796 = 1000^2 + 5214^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28185791) 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 7 ways as a sum of consecutive naturals, for example, 5175 + ... + 9118.

It is an arithmetic number, because the mean of its divisors is an integer number (2251305).

Almost surely, 2^28185796 is an apocalyptic number.

It is an amenable number.

28185796 is a deficient number, since it is larger than the sum of its proper divisors (25845524).

28185796 is a wasteful number, since it uses less digits than its factorization.

28185796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14343 (or 14341 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 28185796 is about 5309.0296665210. The cubic root of 28185796 is about 304.3290671467.

The spelling of 28185796 in words is "twenty-eight million, one hundred eighty-five thousand, seven hundred ninety-six".