22831144720 has 40 divisors (see below), whose sum is σ = 53116968600. Its totient is φ = 9126512640.

The previous prime is 22831144681. The next prime is 22831144729. The reversal of 22831144720 is 2744113822.

It can be written as a sum of positive squares in 4 ways, for example, as 1836293904 + 20994850816 = 42852^2 + 144896^2 .

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

It is a super-2 number, since 2×22831144720² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22831144729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31800 + ... + 216040.

It is an arithmetic number, because the mean of its divisors is an integer number (1327924215).

Almost surely, 2^22831144720 is an apocalyptic number.

22831144720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22831144720 is an abundant number, since it is smaller than the sum of its proper divisors (30285823880).

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

22831144720 is a wasteful number, since it uses less digits than its factorization.

22831144720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185803 (or 185797 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The spelling of 22831144720 in words is "twenty-two billion, eight hundred thirty-one million, one hundred forty-four thousand, seven hundred twenty".