28393921012012 has 12 divisors (see below), whose sum is σ = 50181335650656. Its totient is φ = 14056396540400.

The previous prime is 28393921011997. The next prime is 28393921012027. The reversal of 28393921012012 is 21021012939382.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28393921011997) and next prime (28393921012027).

It is a self number, because there is not a number n which added to its sum of digits gives 28393921012012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35140990948 + ... + 35140991755.

It is an arithmetic number, because the mean of its divisors is an integer number (4181777970888).

Almost surely, 2^{28393921012012} is an apocalyptic number.

It is an amenable number.

28393921012012 is a deficient number, since it is larger than the sum of its proper divisors (21787414638644).

28393921012012 is a wasteful number, since it uses less digits than its factorization.

28393921012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70281982808 (or 70281982806 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 28393921012012 in words is "twenty-eight trillion, three hundred ninety-three billion, nine hundred twenty-one million, twelve thousand, twelve".