22238681850 has 432 divisors, whose sum is σ = 76324730976. Its totient is φ = 4590432000.

The previous prime is 22238681831. The next prime is 22238681893. The reversal of 22238681850 is 5818683222.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 22238681796 and 22238681805.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 67186185 + ... + 67186515.

It is an arithmetic number, because the mean of its divisors is an integer number (176677618).

Almost surely, 2^22238681850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22238681850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38162365488).

22238681850 is an abundant number, since it is smaller than the sum of its proper divisors (54086049126).

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

22238681850 is a wasteful number, since it uses less digits than its factorization.

22238681850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 22238681850 in words is "twenty-two billion, two hundred thirty-eight million, six hundred eighty-one thousand, eight hundred fifty".