12011814 has 40 divisors (see below), whose sum is σ = 27442800. Its totient is φ = 3925584.

The previous prime is 12011807. The next prime is 12011821. The reversal of 12011814 is 41811021.

12011814 = T₁₈₅ + T₁₈₆ + ... + T₄₂₇.

12011814 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12011807) and next prime (12011821).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7887 + ... + 9285.

It is an arithmetic number, because the mean of its divisors is an integer number (686070).

Almost surely, 2^12011814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13721400).

12011814 is an abundant number, since it is smaller than the sum of its proper divisors (15430986).

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

12011814 is a wasteful number, since it uses less digits than its factorization.

12011814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466 (or 1457 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 12011814 is about 3465.8063996709. The cubic root of 12011814 is about 229.0179552800.

Adding to 12011814 its reverse (41811021), we get a palindrome (53822835).

The spelling of 12011814 in words is "twelve million, eleven thousand, eight hundred fourteen".