22400042440 has 16 divisors (see below), whose sum is σ = 50400095580. Its totient is φ = 8960016960.

The previous prime is 22400042429. The next prime is 22400042479. The reversal of 22400042440 is 4424000422.

It can be written as a sum of positive squares in 2 ways, for example, as 20416408996 + 1983633444 = 142886^2 + 44538^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280000491 + ... + 280000570.

Almost surely, 2^22400042440 is an apocalyptic number.

22400042440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22400042440 is an abundant number, since it is smaller than the sum of its proper divisors (28000053140).

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

22400042440 is a wasteful number, since it uses less digits than its factorization.

22400042440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560001072 (or 560001068 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 22400042440 its reverse (4424000422), we get a palindrome (26824042862).

The spelling of 22400042440 in words is "twenty-two billion, four hundred million, forty-two thousand, four hundred forty".