27921032228 has 12 divisors (see below), whose sum is σ = 51433480560. Its totient is φ = 13225752072.

The previous prime is 27921032213. The next prime is 27921032261. The reversal of 27921032228 is 82223012972.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 27921032191 and 27921032200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183690926 + ... + 183691077.

It is an arithmetic number, because the mean of its divisors is an integer number (4286123380).

Almost surely, 2^27921032228 is an apocalyptic number.

It is an amenable number.

27921032228 is a deficient number, since it is larger than the sum of its proper divisors (23512448332).

27921032228 is a wasteful number, since it uses less digits than its factorization.

27921032228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367382026 (or 367382024 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 27921032228 in words is "twenty-seven billion, nine hundred twenty-one million, thirty-two thousand, two hundred twenty-eight".