22290818460 has 192 divisors, whose sum is σ = 67466649600. Its totient is φ = 5482920960.

The previous prime is 22290818447. The next prime is 22290818467. The reversal of 22290818460 is 6481809222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22290818467) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14929474 + ... + 14930966.

It is an arithmetic number, because the mean of its divisors is an integer number (351388800).

Almost surely, 2^22290818460 is an apocalyptic number.

22290818460 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 22290818460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33733324800).

22290818460 is an abundant number, since it is smaller than the sum of its proper divisors (45175831140).

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

22290818460 is a wasteful number, since it uses less digits than its factorization.

22290818460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908 (or 1906 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 22290818460 in words is "twenty-two billion, two hundred ninety million, eight hundred eighteen thousand, four hundred sixty".