12030540 has 48 divisors (see below), whose sum is σ = 34476288. Its totient is φ = 3132864.

The previous prime is 12030539. The next prime is 12030547. The reversal of 12030540 is 4503021.

12030540 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (12030547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249 + ... + 4911.

It is an arithmetic number, because the mean of its divisors is an integer number (718256).

Almost surely, 2^12030540 is an apocalyptic number.

12030540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12030540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17238144).

12030540 is an abundant number, since it is smaller than the sum of its proper divisors (22445748).

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

12030540 is a wasteful number, since it uses less digits than its factorization.

12030540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4718 (or 4716 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 12030540 is about 3468.5068833722. The cubic root of 12030540 is about 229.1369038299.

Adding to 12030540 its reverse (4503021), we get a palindrome (16533561).

The spelling of 12030540 in words is "twelve million, thirty thousand, five hundred forty".