11021814 has 48 divisors (see below), whose sum is σ = 25552800. Its totient is φ = 3421440.

The previous prime is 11021809. The next prime is 11021839. The reversal of 11021814 is 41812011.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 55287 + ... + 55485.

It is an arithmetic number, because the mean of its divisors is an integer number (532350).

Almost surely, 2^11021814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11021814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12776400).

11021814 is an abundant number, since it is smaller than the sum of its proper divisors (14530986).

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

11021814 is a wasteful number, since it uses less digits than its factorization.

11021814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 11021814 is about 3319.9117458149. The cubic root of 11021814 is about 222.5449238079.

Adding to 11021814 its reverse (41812011), we get a palindrome (52833825).

It can be divided in two parts, 1102 and 1814, that added together give a square (2916 = 54²).

The spelling of 11021814 in words is "eleven million, twenty-one thousand, eight hundred fourteen".