11218572 has 72 divisors (see below), whose sum is σ = 31370976. Its totient is φ = 3362304.

The previous prime is 11218517. The next prime is 11218573. The reversal of 11218572 is 27581211.

11218572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11218573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13678 + ... + 14474.

It is an arithmetic number, because the mean of its divisors is an integer number (435708).

Almost surely, 2^11218572 is an apocalyptic number.

11218572 is a gapful number since it is divisible by the number (12) 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 11218572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15685488).

11218572 is an abundant number, since it is smaller than the sum of its proper divisors (20152404).

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

11218572 is a wasteful number, since it uses less digits than its factorization.

11218572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 842 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 11218572 is about 3349.4136800342. The cubic root of 11218572 is about 223.8613885219.

Adding to 11218572 its reverse (27581211), we get a palindrome (38799783).

The spelling of 11218572 in words is "eleven million, two hundred eighteen thousand, five hundred seventy-two".