28611281876 has 12 divisors (see below), whose sum is σ = 50209215840. Its totient is φ = 14265791640.

The previous prime is 28611281873. The next prime is 28611281891. The reversal of 28611281876 is 67818211682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28611281873) 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, 9960710 + ... + 9963581.

It is an arithmetic number, because the mean of its divisors is an integer number (4184101320).

Almost surely, 2^28611281876 is an apocalyptic number.

It is an amenable number.

28611281876 is a deficient number, since it is larger than the sum of its proper divisors (21597933964).

28611281876 is a wasteful number, since it uses less digits than its factorization.

28611281876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19924654 (or 19924652 counting only the distinct ones).

The product of its digits is 516096, while the sum is 50.

The spelling of 28611281876 in words is "twenty-eight billion, six hundred eleven million, two hundred eighty-one thousand, eight hundred seventy-six".