21827714028 has 48 divisors (see below), whose sum is σ = 51647877120. Its totient is φ = 7174246464.

The previous prime is 21827714021. The next prime is 21827714039. The reversal of 21827714028 is 82041772812.

It is not an unprimeable number, because it can be changed into a prime (21827714021) 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 15 ways as a sum of consecutive naturals, for example, 204478 + ... + 292346.

It is an arithmetic number, because the mean of its divisors is an integer number (1075997440).

Almost surely, 2^21827714028 is an apocalyptic number.

It is an amenable number.

21827714028 is an abundant number, since it is smaller than the sum of its proper divisors (29820163092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21827714028 is a wasteful number, since it uses less digits than its factorization.

21827714028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88166 (or 88164 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 42.

The spelling of 21827714028 in words is "twenty-one billion, eight hundred twenty-seven million, seven hundred fourteen thousand, twenty-eight".