28056107807 has 32 divisors (see below), whose sum is σ = 36389606400. Its totient is φ = 21005837568.

The previous prime is 28056107803. The next prime is 28056107837. The reversal of 28056107807 is 70870165082.

It is a cyclic number.

It is not a de Polignac number, because 28056107807 - 2² = 28056107803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056107801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1580123 + ... + 1597779.

It is an arithmetic number, because the mean of its divisors is an integer number (1137175200).

Almost surely, 2^28056107807 is an apocalyptic number.

28056107807 is a deficient number, since it is larger than the sum of its proper divisors (8333498593).

28056107807 is a wasteful number, since it uses less digits than its factorization.

28056107807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18615.

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 28056107807 in words is "twenty-eight billion, fifty-six million, one hundred seven thousand, eight hundred seven".