12030556 has 6 divisors (see below), whose sum is σ = 21053480. Its totient is φ = 6015276.

The previous prime is 12030547. The next prime is 12030559. The reversal of 12030556 is 65503021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12030559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1503816 + ... + 1503823.

Almost surely, 2^12030556 is an apocalyptic number.

It is an amenable number.

12030556 is a deficient number, since it is larger than the sum of its proper divisors (9022924).

12030556 is a wasteful number, since it uses less digits than its factorization.

12030556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007643 (or 3007641 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 12030556 is about 3468.5091898393. The cubic root of 12030556 is about 229.1370054099.

Adding to 12030556 its reverse (65503021), we get a palindrome (77533577).

The spelling of 12030556 in words is "twelve million, thirty thousand, five hundred fifty-six".