22224544000 has 144 divisors (see below), whose sum is σ = 55604779776. Its totient is φ = 8851200000.

The previous prime is 22224543973. The next prime is 22224544019. The reversal of 22224544000 is 44542222.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 8030617 + ... + 8033383.

It is an arithmetic number, because the mean of its divisors is an integer number (386144304).

Almost surely, 2^22224544000 is an apocalyptic number.

22224544000 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 22224544000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27802389888).

22224544000 is an abundant number, since it is smaller than the sum of its proper divisors (33380235776).

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

22224544000 is an equidigital number, since it uses as much as digits as its factorization.

22224544000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049 (or 3025 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The spelling of 22224544000 in words is "twenty-two billion, two hundred twenty-four million, five hundred forty-four thousand".