12540654 has 24 divisors (see below), whose sum is σ = 31053360. Its totient is φ = 3583008.

The previous prime is 12540653. The next prime is 12540667. The reversal of 12540654 is 45604521.

12540654 is a `hidden beast` number, since 1 + 2 + 5 + 4 + 0 + 654 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12540653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49639 + ... + 49890.

It is an arithmetic number, because the mean of its divisors is an integer number (1293890).

Almost surely, 2^12540654 is an apocalyptic number.

12540654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12540654 is an abundant number, since it is smaller than the sum of its proper divisors (18512706).

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

12540654 is a wasteful number, since it uses less digits than its factorization.

12540654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99544 (or 99541 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 12540654 is about 3541.2785826591. The cubic root of 12540654 is about 232.3307682823.

The spelling of 12540654 in words is "twelve million, five hundred forty thousand, six hundred fifty-four".