12543630 has 32 divisors (see below), whose sum is σ = 32842368. Its totient is φ = 3040800.

The previous prime is 12543607. The next prime is 12543647. The reversal of 12543630 is 3634521.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12543630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18676 + ... + 19335.

It is an arithmetic number, because the mean of its divisors is an integer number (1026324).

Almost surely, 2^12543630 is an apocalyptic number.

12543630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12543630 is an abundant number, since it is smaller than the sum of its proper divisors (20298738).

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

12543630 is a wasteful number, since it uses less digits than its factorization.

12543630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38032.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 12543630 is about 3541.6987449528. The cubic root of 12543630 is about 232.3491448274.

It can be divided in two parts, 1254 and 3630, that added together give a palindrome (4884).

The spelling of 12543630 in words is "twelve million, five hundred forty-three thousand, six hundred thirty".