22204256140 has 96 divisors (see below), whose sum is σ = 53601891840. Its totient is φ = 7641216000.

The previous prime is 22204256119. The next prime is 22204256149. The reversal of 22204256140 is 4165240222.

It is a junction number, because it is equal to n+sod(n) for n = 22204256099 and 22204256108.

It is not an unprimeable number, because it can be changed into a prime (22204256149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5017969 + ... + 5022391.

It is an arithmetic number, because the mean of its divisors is an integer number (558353040).

Almost surely, 2^22204256140 is an apocalyptic number.

22204256140 is a gapful number since it is divisible by the number (20) 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 22204256140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26800945920).

22204256140 is an abundant number, since it is smaller than the sum of its proper divisors (31397635700).

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

22204256140 is a wasteful number, since it uses less digits than its factorization.

22204256140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5663 (or 5661 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 22204256140 its reverse (4165240222), we get a palindrome (26369496362).

The spelling of 22204256140 in words is "twenty-two billion, two hundred four million, two hundred fifty-six thousand, one hundred forty".