22768643720 has 64 divisors (see below), whose sum is σ = 52222579200. Its totient is φ = 8932435200.

The previous prime is 22768643627. The next prime is 22768643731. The reversal of 22768643720 is 2734686722.

It is a super-2 number, since 2×22768643720² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453302 + ... + 501018.

It is an arithmetic number, because the mean of its divisors is an integer number (815977800).

Almost surely, 2^22768643720 is an apocalyptic number.

22768643720 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 22768643720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26111289600).

22768643720 is an abundant number, since it is smaller than the sum of its proper divisors (29453935480).

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

22768643720 is a wasteful number, since it uses less digits than its factorization.

22768643720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47958 (or 47954 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 47.

The spelling of 22768643720 in words is "twenty-two billion, seven hundred sixty-eight million, six hundred forty-three thousand, seven hundred twenty".