28056107805 has 64 divisors (see below), whose sum is σ = 49587987456. Its totient is φ = 13432320000.

The previous prime is 28056107803. The next prime is 28056107837. The reversal of 28056107805 is 50870165082.

It is not a de Polignac number, because 28056107805 - 2¹ = 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 polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5841405 + ... + 5846205.

It is an arithmetic number, because the mean of its divisors is an integer number (774812304).

Almost surely, 2^28056107805 is an apocalyptic number.

It is an amenable number.

28056107805 is a deficient number, since it is larger than the sum of its proper divisors (21531879651).

28056107805 is a wasteful number, since it uses less digits than its factorization.

28056107805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5258.

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 28056107805 in words is "twenty-eight billion, fifty-six million, one hundred seven thousand, eight hundred five".