12051830 has 16 divisors (see below), whose sum is σ = 24792480. Its totient is φ = 4132032.

The previous prime is 12051811. The next prime is 12051841. The reversal of 12051830 is 3815021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86015 + ... + 86154.

It is an arithmetic number, because the mean of its divisors is an integer number (1549530).

Almost surely, 2^12051830 is an apocalyptic number.

12051830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12051830 is an abundant number, since it is smaller than the sum of its proper divisors (12740650).

12051830 is a wasteful number, since it uses less digits than its factorization.

12051830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172183.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 12051830 is about 3471.5745707100. The cubic root of 12051830 is about 229.2719892000.

Adding to 12051830 its reverse (3815021), we get a palindrome (15866851).

The spelling of 12051830 in words is "twelve million, fifty-one thousand, eight hundred thirty".