12180854 has 16 divisors (see below), whose sum is σ = 21391776. Its totient is φ = 5092800.

The previous prime is 12180851. The next prime is 12180871. The reversal of 12180854 is 45808121.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12180851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10037 + ... + 11184.

It is an arithmetic number, because the mean of its divisors is an integer number (1336986).

Almost surely, 2^12180854 is an apocalyptic number.

12180854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12180854 is a deficient number, since it is larger than the sum of its proper divisors (9210922).

12180854 is a wasteful number, since it uses less digits than its factorization.

12180854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21271.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 12180854 is about 3490.1080212509. The cubic root of 12180854 is about 230.0872636737.

Adding to 12180854 its reverse (45808121), we get a palindrome (57988975).

The spelling of 12180854 in words is "twelve million, one hundred eighty thousand, eight hundred fifty-four".