12055818 has 32 divisors (see below), whose sum is σ = 25344000. Its totient is φ = 3815856.

The previous prime is 12055811. The next prime is 12055837. The reversal of 12055818 is 81855021.

It is a super-3 number, since 3×12055818³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12055811) 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, 27243 + ... + 27681.

It is an arithmetic number, because the mean of its divisors is an integer number (792000).

Almost surely, 2^12055818 is an apocalyptic number.

12055818 is an abundant number, since it is smaller than the sum of its proper divisors (13288182).

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

12055818 is a wasteful number, since it uses less digits than its factorization.

12055818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666.

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 12055818 is about 3472.1489023370. The cubic root of 12055818 is about 229.2972754251.

The spelling of 12055818 in words is "twelve million, fifty-five thousand, eight hundred eighteen".