12643474 has 16 divisors (see below), whose sum is σ = 20609280. Its totient is φ = 5795280.

The previous prime is 12643469. The next prime is 12643487. The reversal of 12643474 is 47434621.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4189 + ... + 6544.

It is an arithmetic number, because the mean of its divisors is an integer number (1288080).

Almost surely, 2^12643474 is an apocalyptic number.

12643474 is a deficient number, since it is larger than the sum of its proper divisors (7965806).

12643474 is a wasteful number, since it uses less digits than its factorization.

12643474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10785.

The product of its digits is 16128, while the sum is 31.

The square root of 12643474 is about 3555.7663027820. The cubic root of 12643474 is about 232.9639957384.

The spelling of 12643474 in words is "twelve million, six hundred forty-three thousand, four hundred seventy-four".