28404263117930 has 32 divisors (see below), whose sum is σ = 58495208866560. Its totient is φ = 9728007517440.

The previous prime is 28404263117917. The next prime is 28404263117953. The reversal of 28404263117930 is 3971136240482.

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, 220705631 + ... + 220834290.

It is an arithmetic number, because the mean of its divisors is an integer number (1827975277080).

Almost surely, 2^{28404263117930} is an apocalyptic number.

28404263117930 is an abundant number, since it is smaller than the sum of its proper divisors (30090945748630).

28404263117930 is a wasteful number, since it uses less digits than its factorization.

28404263117930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441540854.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 28404263117930 in words is "twenty-eight trillion, four hundred four billion, two hundred sixty-three million, one hundred seventeen thousand, nine hundred thirty".