12145830 has 32 divisors (see below), whose sum is σ = 29484000. Its totient is φ = 3201792.

The previous prime is 12145829. The next prime is 12145843. The reversal of 12145830 is 3854121.

12145830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12145830.

It is a congruent number.

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, 396 + ... + 4944.

It is an arithmetic number, because the mean of its divisors is an integer number (921375).

Almost surely, 2^12145830 is an apocalyptic number.

12145830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12145830 is an abundant number, since it is smaller than the sum of its proper divisors (17338170).

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

12145830 is a wasteful number, since it uses less digits than its factorization.

12145830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 12145830 is about 3485.0867994929. The cubic root of 12145830 is about 229.8665262121.

Adding to 12145830 its reverse (3854121), we get a palindrome (15999951).

The spelling of 12145830 in words is "twelve million, one hundred forty-five thousand, eight hundred thirty".