12543622 has 32 divisors (see below), whose sum is σ = 23736384. Its totient is φ = 4841280.

The previous prime is 12543607. The next prime is 12543647. The reversal of 12543622 is 22634521.

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, 305922 + ... + 305962.

It is an arithmetic number, because the mean of its divisors is an integer number (741762).

Almost surely, 2^12543622 is an apocalyptic number.

12543622 is a deficient number, since it is larger than the sum of its proper divisors (11192762).

12543622 is an frugal number, since it uses more digits than its factorization.

12543622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 63 counting only the distinct ones).

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

The square root of 12543622 is about 3541.6976155511. The cubic root of 12543622 is about 232.3490954320.

The spelling of 12543622 in words is "twelve million, five hundred forty-three thousand, six hundred twenty-two".