11862018 has 48 divisors (see below), whose sum is σ = 30670560. Its totient is φ = 3388392.

The previous prime is 11862013. The next prime is 11862029. The reversal of 11862018 is 81026811.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 11861982 and 11862000.

It is not an unprimeable number, because it can be changed into a prime (11862013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405 + ... + 4887.

It is an arithmetic number, because the mean of its divisors is an integer number (638970).

Almost surely, 2^11862018 is an apocalyptic number.

11862018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11862018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15335280).

11862018 is an abundant number, since it is smaller than the sum of its proper divisors (18808542).

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

11862018 is a wasteful number, since it uses less digits than its factorization.

11862018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508 (or 4495 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 11862018 is about 3444.1280464001. The cubic root of 11862018 is about 228.0619637679.

Adding to 11862018 its reverse (81026811), we get a palindrome (92888829).

The spelling of 11862018 in words is "eleven million, eight hundred sixty-two thousand, eighteen".