22387680820 has 48 divisors (see below), whose sum is σ = 48142543680. Its totient is φ = 8740440576.

The previous prime is 22387680793. The next prime is 22387680859. The reversal of 22387680820 is 2808678322.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1271799 + ... + 1289281.

It is an arithmetic number, because the mean of its divisors is an integer number (1002969660).

Almost surely, 2^22387680820 is an apocalyptic number.

22387680820 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 22387680820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24071271840).

22387680820 is an abundant number, since it is smaller than the sum of its proper divisors (25754862860).

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

22387680820 is a wasteful number, since it uses less digits than its factorization.

22387680820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19024 (or 19022 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 22387680820 in words is "twenty-two billion, three hundred eighty-seven million, six hundred eighty thousand, eight hundred twenty".