11218906 has 8 divisors (see below), whose sum is σ = 16936020. Its totient is φ = 5573568.

The previous prime is 11218903. The next prime is 11218943. The reversal of 11218906 is 60981211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9090225 + 2128681 = 3015^2 + 1459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (11218903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17551 + ... + 18178.

Almost surely, 2^11218906 is an apocalyptic number.

11218906 is a deficient number, since it is larger than the sum of its proper divisors (5717114).

11218906 is a wasteful number, since it uses less digits than its factorization.

11218906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35888.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 11218906 is about 3349.4635391358. The cubic root of 11218906 is about 223.8636101048.

The spelling of 11218906 in words is "eleven million, two hundred eighteen thousand, nine hundred six".