11667018 has 32 divisors (see below), whose sum is σ = 26053632. Its totient is φ = 3452400.

The previous prime is 11667017. The next prime is 11667037. The reversal of 11667018 is 81076611.

It is a happy number.

It is a super-2 number, since 2×11667018² = 272238618024648, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11667011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 783 + ... + 4893.

It is an arithmetic number, because the mean of its divisors is an integer number (814176).

Almost surely, 2^11667018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11667018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13026816).

11667018 is an abundant number, since it is smaller than the sum of its proper divisors (14386614).

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

11667018 is a wasteful number, since it uses less digits than its factorization.

11667018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 11667018 is about 3415.7016848665. The cubic root of 11667018 is about 226.8053471797.

The spelling of 11667018 in words is "eleven million, six hundred sixty-seven thousand, eighteen".