22201984 has 64 divisors (see below), whose sum is σ = 51408000. Its totient is φ = 9354240.

The previous prime is 22201967. The next prime is 22201999. The reversal of 22201984 is 48910222.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63442 + ... + 63790.

It is an arithmetic number, because the mean of its divisors is an integer number (803250).

Almost surely, 2^22201984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22201984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25704000).

22201984 is an abundant number, since it is smaller than the sum of its proper divisors (29206016).

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

22201984 is an equidigital number, since it uses as much as digits as its factorization.

22201984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 22201984 is about 4711.8981313267. The cubic root of 22201984 is about 281.0588479562.

The spelling of 22201984 in words is "twenty-two million, two hundred one thousand, nine hundred eighty-four".