12306040 has 16 divisors (see below), whose sum is σ = 27688680. Its totient is φ = 4922400.

The previous prime is 12306037. The next prime is 12306061. The reversal of 12306040 is 4060321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153786 + ... + 153865.

Almost surely, 2^12306040 is an apocalyptic number.

12306040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12306040 is an abundant number, since it is smaller than the sum of its proper divisors (15382640).

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

12306040 is a wasteful number, since it uses less digits than its factorization.

12306040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307662 (or 307658 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 12306040 is about 3507.9965792458. The cubic root of 12306040 is about 230.8728021702.

Adding to 12306040 its reverse (4060321), we get a palindrome (16366361).

The spelling of 12306040 in words is "twelve million, three hundred six thousand, forty".