22215240288 has 72 divisors (see below), whose sum is σ = 63318855600. Its totient is φ = 7388169984.

The previous prime is 22215240277. The next prime is 22215240349. The reversal of 22215240288 is 88204251222.

It is a happy number.

22215240288 is a `hidden beast` number, since 2 + 22 + 152 + 402 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38578 + ... + 214286.

It is an arithmetic number, because the mean of its divisors is an integer number (879428550).

Almost surely, 2^22215240288 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 22215240288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31659427800).

22215240288 is an abundant number, since it is smaller than the sum of its proper divisors (41103615312).

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

22215240288 is a wasteful number, since it uses less digits than its factorization.

22215240288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176164 (or 176153 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The spelling of 22215240288 in words is "twenty-two billion, two hundred fifteen million, two hundred forty thousand, two hundred eighty-eight".