12304540 has 36 divisors (see below), whose sum is σ = 27035064. Its totient is φ = 4703776.

The previous prime is 12304531. The next prime is 12304541. The reversal of 12304540 is 4540321.

12304540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12304540² = 302803409223200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12304541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9999 + ... + 11161.

It is an arithmetic number, because the mean of its divisors is an integer number (750974).

Almost surely, 2^12304540 is an apocalyptic number.

12304540 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 12304540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13517532).

12304540 is an abundant number, since it is smaller than the sum of its proper divisors (14730524).

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

12304540 is a wasteful number, since it uses less digits than its factorization.

12304540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218 (or 1193 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 12304540 is about 3507.7827754865. The cubic root of 12304540 is about 230.8634213221.

Adding to 12304540 its reverse (4540321), we get a palindrome (16844861).

The spelling of 12304540 in words is "twelve million, three hundred four thousand, five hundred forty".