20227838940 has 96 divisors (see below), whose sum is σ = 63817528320. Its totient is φ = 5318107200.

The previous prime is 20227838929. The next prime is 20227838941. The reversal of 20227838940 is 4983872202.

20227838940 is a `hidden beast` number, since 2 + 0 + 227 + 8 + 389 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20227838941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225456 + ... + 302135.

It is an arithmetic number, because the mean of its divisors is an integer number (664765920).

Almost surely, 2^20227838940 is an apocalyptic number.

20227838940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20227838940 is an abundant number, since it is smaller than the sum of its proper divisors (43589689380).

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

20227838940 is a wasteful number, since it uses less digits than its factorization.

20227838940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527680 (or 527672 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 20227838940 in words is "twenty billion, two hundred twenty-seven million, eight hundred thirty-eight thousand, nine hundred forty".