28216882837 has 32 divisors (see below), whose sum is σ = 34417990656. Its totient is φ = 22781606400.

The previous prime is 28216882817. The next prime is 28216882849. The reversal of 28216882837 is 73828861282.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28216882837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28216882817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 748513 + ... + 785305.

It is an arithmetic number, because the mean of its divisors is an integer number (1075562208).

Almost surely, 2^28216882837 is an apocalyptic number.

It is an amenable number.

28216882837 is a deficient number, since it is larger than the sum of its proper divisors (6201107819).

28216882837 is a wasteful number, since it uses less digits than its factorization.

28216882837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37021.

The product of its digits is 4128768, while the sum is 55.

The spelling of 28216882837 in words is "twenty-eight billion, two hundred sixteen million, eight hundred eighty-two thousand, eight hundred thirty-seven".