12180834 has 32 divisors (see below), whose sum is σ = 27233280. Its totient is φ = 4035600.

The previous prime is 12180829. The next prime is 12180851. The reversal of 12180834 is 43808121.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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 = 12180798 and 12180807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9724 + ... + 10904.

It is an arithmetic number, because the mean of its divisors is an integer number (851040).

Almost surely, 2^12180834 is an apocalyptic number.

12180834 is an abundant number, since it is smaller than the sum of its proper divisors (15052446).

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

12180834 is a wasteful number, since it uses less digits than its factorization.

12180834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383 (or 1377 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 12180834 is about 3490.1051560089. The cubic root of 12180834 is about 230.0871377453.

Adding to 12180834 its reverse (43808121), we get a palindrome (55988955).

The spelling of 12180834 in words is "twelve million, one hundred eighty thousand, eight hundred thirty-four".