28104606836 has 12 divisors (see below), whose sum is σ = 49250165412. Its totient is φ = 14033131008.

The previous prime is 28104606833. The next prime is 28104606841. The reversal of 28104606836 is 63860640182.

It can be written as a sum of positive squares in 2 ways, for example, as 27509539600 + 595067236 = 165860^2 + 24394^2 .

It is a super-2 number, since 2×28104606836² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28104606833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4789805 + ... + 4795668.

It is an arithmetic number, because the mean of its divisors is an integer number (4104180451).

Almost surely, 2^28104606836 is an apocalyptic number.

It is an amenable number.

28104606836 is a deficient number, since it is larger than the sum of its proper divisors (21145558576).

28104606836 is a wasteful number, since it uses less digits than its factorization.

28104606836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9586210 (or 9586208 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 28104606836 in words is "twenty-eight billion, one hundred four million, six hundred six thousand, eight hundred thirty-six".