12040830 has 48 divisors (see below), whose sum is σ = 31477680. Its totient is φ = 3193344.

The previous prime is 12040823. The next prime is 12040841. The reversal of 12040830 is 3804021.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31581 + ... + 31959.

It is an arithmetic number, because the mean of its divisors is an integer number (655785).

Almost surely, 2^12040830 is an apocalyptic number.

12040830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12040830 is an abundant number, since it is smaller than the sum of its proper divisors (19436850).

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

12040830 is a wasteful number, since it uses less digits than its factorization.

12040830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 12040830 is about 3469.9899135300. The cubic root of 12040830 is about 229.2022139165.

Adding to 12040830 its reverse (3804021), we get a palindrome (15844851).

The spelling of 12040830 in words is "twelve million, forty thousand, eight hundred thirty".