12287928436 has 24 divisors (see below), whose sum is σ = 24646294400. Its totient is φ = 5251161312.

The previous prime is 12287928431. The next prime is 12287928449. The reversal of 12287928436 is 63482978221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12287928431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618960 + ... + 638503.

Almost surely, 2^12287928436 is an apocalyptic number.

It is an amenable number.

12287928436 is an abundant number, since it is smaller than the sum of its proper divisors (12358365964).

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

12287928436 is a wasteful number, since it uses less digits than its factorization.

12287928436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257823 (or 1257821 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The spelling of 12287928436 in words is "twelve billion, two hundred eighty-seven million, nine hundred twenty-eight thousand, four hundred thirty-six".