12516340 has 24 divisors (see below), whose sum is σ = 26353152. Its totient is φ = 4993440.

The previous prime is 12516299. The next prime is 12516341. The reversal of 12516340 is 4361521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12516341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11625 + ... + 12655.

It is an arithmetic number, because the mean of its divisors is an integer number (1098048).

Almost surely, 2^12516340 is an apocalyptic number.

12516340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12516340 is an abundant number, since it is smaller than the sum of its proper divisors (13836812).

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

12516340 is a wasteful number, since it uses less digits than its factorization.

12516340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647 (or 1645 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 12516340 is about 3537.8439762092. The cubic root of 12516340 is about 232.1805223979.

Adding to 12516340 its reverse (4361521), we get a palindrome (16877861).

The spelling of 12516340 in words is "twelve million, five hundred sixteen thousand, three hundred forty".