20227767384 has 128 divisors (see below), whose sum is σ = 59023008000. Its totient is φ = 5711731200.

The previous prime is 20227767379. The next prime is 20227767397. The reversal of 20227767384 is 48376772202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 272922 + ... + 339030.

It is an arithmetic number, because the mean of its divisors is an integer number (461117250).

Almost surely, 2^20227767384 is an apocalyptic number.

20227767384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20227767384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29511504000).

20227767384 is an abundant number, since it is smaller than the sum of its proper divisors (38795240616).

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

20227767384 is a wasteful number, since it uses less digits than its factorization.

20227767384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66209 (or 66205 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 48.

The spelling of 20227767384 in words is "twenty billion, two hundred twenty-seven million, seven hundred sixty-seven thousand, three hundred eighty-four".