11222388 has 60 divisors (see below), whose sum is σ = 30898560. Its totient is φ = 3541968.

The previous prime is 11222357. The next prime is 11222417. The reversal of 11222388 is 88322211.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5245 + ... + 7067.

It is an arithmetic number, because the mean of its divisors is an integer number (514976).

Almost surely, 2^11222388 is an apocalyptic number.

11222388 is a gapful number since it is divisible by the number (18) 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 11222388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15449280).

11222388 is an abundant number, since it is smaller than the sum of its proper divisors (19676172).

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

11222388 is a wasteful number, since it uses less digits than its factorization.

11222388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858 (or 1847 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 11222388 is about 3349.9832835404. The cubic root of 11222388 is about 223.8867678132.

Adding to 11222388 its reverse (88322211), we get a palindrome (99544599).

It can be divided in two parts, 112 and 22388, that added together give a square (22500 = 150²).

The spelling of 11222388 in words is "eleven million, two hundred twenty-two thousand, three hundred eighty-eight".