11840018 has 8 divisors (see below), whose sum is σ = 17774640. Its totient is φ = 5915140.

The previous prime is 11840011. The next prime is 11840029. The reversal of 11840018 is 81004811.

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

It is a junction number, because it is equal to n+sod(n) for n = 11839975 and 11840002.

It is not an unprimeable number, because it can be changed into a prime (11840011) 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, 3413 + ... + 5943.

It is an arithmetic number, because the mean of its divisors is an integer number (2221830).

Almost surely, 2^11840018 is an apocalyptic number.

11840018 is a deficient number, since it is larger than the sum of its proper divisors (5934622).

11840018 is a wasteful number, since it uses less digits than its factorization.

11840018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872.

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 11840018 is about 3440.9327223879. The cubic root of 11840018 is about 227.9208841125.

Adding to 11840018 its reverse (81004811), we get a palindrome (92844829).

The spelling of 11840018 in words is "eleven million, eight hundred forty thousand, eighteen".