12634540 has 24 divisors (see below), whose sum is σ = 27099072. Its totient is φ = 4945920.

The previous prime is 12634537. The next prime is 12634547. The reversal of 12634540 is 4543621.

It is not an unprimeable number, because it can be changed into a prime (12634547) 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, 5781 + ... + 7660.

It is an arithmetic number, because the mean of its divisors is an integer number (1129128).

Almost surely, 2^12634540 is an apocalyptic number.

12634540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12634540 is an abundant number, since it is smaller than the sum of its proper divisors (14464532).

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

12634540 is a wasteful number, since it uses less digits than its factorization.

12634540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13497 (or 13495 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 12634540 is about 3554.5098114930. The cubic root of 12634540 is about 232.9091112778.

The spelling of 12634540 in words is "twelve million, six hundred thirty-four thousand, five hundred forty".