22000144240 has 40 divisors (see below), whose sum is σ = 51182661600. Its totient is φ = 8794496256.

The previous prime is 22000144219. The next prime is 22000144273. The reversal of 22000144240 is 4244100022.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41661 + ... + 213859.

It is an arithmetic number, because the mean of its divisors is an integer number (1279566540).

Almost surely, 2^22000144240 is an apocalyptic number.

22000144240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22000144240 is an abundant number, since it is smaller than the sum of its proper divisors (29182517360).

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

22000144240 is a wasteful number, since it uses less digits than its factorization.

22000144240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173809 (or 173803 counting only the distinct ones).

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

Adding to 22000144240 its reverse (4244100022), we get a palindrome (26244244262).

The spelling of 22000144240 in words is "twenty-two billion, one hundred forty-four thousand, two hundred forty".