11822818 has 12 divisors (see below), whose sum is σ = 20629782. Its totient is φ = 5066880.

The previous prime is 11822813. The next prime is 11822821. The reversal of 11822818 is 81822811.

It is a happy number.

11822818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8277129 + 3545689 = 2877^2 + 1883^2 .

It is a super-2 number, since 2×11822818² = 279558050922248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11822818.

It is not an unprimeable number, because it can be changed into a prime (11822813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60223 + ... + 60418.

Almost surely, 2^11822818 is an apocalyptic number.

11822818 is a deficient number, since it is larger than the sum of its proper divisors (8806964).

11822818 is a wasteful number, since it uses less digits than its factorization.

11822818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120657 (or 120650 counting only the distinct ones).

The product of its digits is 2048, while the sum is 31.

The square root of 11822818 is about 3438.4324917032. The cubic root of 11822818 is about 227.8104636990.

The spelling of 11822818 in words is "eleven million, eight hundred twenty-two thousand, eight hundred eighteen".