11640222 has 24 divisors (see below), whose sum is σ = 27513720. Its totient is φ = 3527280.

The previous prime is 11640199. The next prime is 11640241. The reversal of 11640222 is 22204611.

11640222 is a `hidden beast` number, since 1 + 1 + 640 + 2 + 22 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 11640195 and 11640204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29197 + ... + 29592.

It is an arithmetic number, because the mean of its divisors is an integer number (1146405).

Almost surely, 2^11640222 is an apocalyptic number.

11640222 is an abundant number, since it is smaller than the sum of its proper divisors (15873498).

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

11640222 is a wasteful number, since it uses less digits than its factorization.

11640222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58808 (or 58805 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 11640222 is about 3411.7769563675. The cubic root of 11640222 is about 226.6315771326.

Adding to 11640222 its reverse (22204611), we get a palindrome (33844833).

The spelling of 11640222 in words is "eleven million, six hundred forty thousand, two hundred twenty-two".