28336670672 has 20 divisors (see below), whose sum is σ = 54913528836. Its totient is φ = 14165437440.

The previous prime is 28336670641. The next prime is 28336670707. The reversal of 28336670672 is 27607663382.

It can be written as a sum of positive squares in 2 ways, for example, as 20407836736 + 7928833936 = 142856^2 + 89044^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28336670672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99329 + ... + 257952.

Almost surely, 2^28336670672 is an apocalyptic number.

It is an amenable number.

28336670672 is a deficient number, since it is larger than the sum of its proper divisors (26576858164).

28336670672 is a wasteful number, since it uses less digits than its factorization.

28336670672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362246 (or 362240 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 50.

The spelling of 28336670672 in words is "twenty-eight billion, three hundred thirty-six million, six hundred seventy thousand, six hundred seventy-two".