28056106730 has 8 divisors (see below), whose sum is σ = 50500992132. Its totient is φ = 11222442688.

The previous prime is 28056106703. The next prime is 28056106751. The reversal of 28056106730 is 3760165082.

It can be written as a sum of positive squares in 2 ways, for example, as 25353874441 + 2702232289 = 159229^2 + 51983^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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, 1402805327 + ... + 1402805346.

Almost surely, 2^28056106730 is an apocalyptic number.

28056106730 is a deficient number, since it is larger than the sum of its proper divisors (22444885402).

28056106730 is a wasteful number, since it uses less digits than its factorization.

28056106730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805610680.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 28056106730 in words is "twenty-eight billion, fifty-six million, one hundred six thousand, seven hundred thirty".