22140020440 has 16 divisors (see below), whose sum is σ = 49815046080. Its totient is φ = 8856008160.

The previous prime is 22140020429. The next prime is 22140020473. The reversal of 22140020440 is 4402004122.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 276750216 + ... + 276750295.

It is an arithmetic number, because the mean of its divisors is an integer number (3113440380).

Almost surely, 2^22140020440 is an apocalyptic number.

22140020440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22140020440 is an abundant number, since it is smaller than the sum of its proper divisors (27675025640).

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

22140020440 is a wasteful number, since it uses less digits than its factorization.

22140020440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553500522 (or 553500518 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 22140020440 its reverse (4402004122), we get a palindrome (26542024562).

The spelling of 22140020440 in words is "twenty-two billion, one hundred forty million, twenty thousand, four hundred forty".