12028640236 has 6 divisors (see below), whose sum is σ = 21050120420. Its totient is φ = 6014320116.

The previous prime is 12028640231. The next prime is 12028640237. The reversal of 12028640236 is 63204682021.

It is not an unprimeable number, because it can be changed into a prime (12028640231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1503580026 + ... + 1503580033.

Almost surely, 2^12028640236 is an apocalyptic number.

It is an amenable number.

12028640236 is a deficient number, since it is larger than the sum of its proper divisors (9021480184).

12028640236 is a wasteful number, since it uses less digits than its factorization.

12028640236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007160063 (or 3007160061 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 12028640236 in words is "twelve billion, twenty-eight million, six hundred forty thousand, two hundred thirty-six".