12540516 has 12 divisors (see below), whose sum is σ = 29261232. Its totient is φ = 4180168.

The previous prime is 12540503. The next prime is 12540529. The reversal of 12540516 is 61504521.

It is an interprime number because it is at equal distance from previous prime (12540503) and next prime (12540529).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

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, 522510 + ... + 522533.

It is an arithmetic number, because the mean of its divisors is an integer number (2438436).

Almost surely, 2^12540516 is an apocalyptic number.

It is an amenable number.

12540516 is an abundant number, since it is smaller than the sum of its proper divisors (16720716).

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

12540516 is a wasteful number, since it uses less digits than its factorization.

12540516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045050 (or 1045048 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 12540516 is about 3541.2590981175. The cubic root of 12540516 is about 232.3299160736.

The spelling of 12540516 in words is "twelve million, five hundred forty thousand, five hundred sixteen".