22181528880 has 240 divisors, whose sum is σ = 86302482240. Its totient is φ = 5000527872.

The previous prime is 22181528849. The next prime is 22181528893. The reversal of 22181528880 is 8882518122.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 337776 + ... + 398064.

It is an arithmetic number, because the mean of its divisors is an integer number (359593676).

Almost surely, 2^22181528880 is an apocalyptic number.

22181528880 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 22181528880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43151241120).

22181528880 is an abundant number, since it is smaller than the sum of its proper divisors (64120953360).

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

22181528880 is a wasteful number, since it uses less digits than its factorization.

22181528880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60388 (or 60379 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 45.

The spelling of 22181528880 in words is "twenty-two billion, one hundred eighty-one million, five hundred twenty-eight thousand, eight hundred eighty".