22215468 has 96 divisors (see below), whose sum is σ = 59996160. Its totient is φ = 6336000.

The previous prime is 22215409. The next prime is 22215491. The reversal of 22215468 is 86451222.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249568 + ... + 249656.

It is an arithmetic number, because the mean of its divisors is an integer number (624960).

Almost surely, 2^22215468 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 22215468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29998080).

22215468 is an abundant number, since it is smaller than the sum of its proper divisors (37780692).

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

22215468 is a wasteful number, since it uses less digits than its factorization.

22215468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 197 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 22215468 is about 4713.3287600166. The cubic root of 22215468 is about 281.1157352227.

It can be divided in two parts, 222154 and 68, that added together give a palindrome (222222).

The spelling of 22215468 in words is "twenty-two million, two hundred fifteen thousand, four hundred sixty-eight".