28381519094 has 32 divisors (see below), whose sum is σ = 44404070400. Its totient is φ = 13589997120.

The previous prime is 28381519069. The next prime is 28381519171. The reversal of 28381519094 is 49091518382.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 8549567 + ... + 8552885.

It is an arithmetic number, because the mean of its divisors is an integer number (1387627200).

Almost surely, 2^28381519094 is an apocalyptic number.

28381519094 is a deficient number, since it is larger than the sum of its proper divisors (16022551306).

28381519094 is a wasteful number, since it uses less digits than its factorization.

28381519094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748.

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 28381519094 in words is "twenty-eight billion, three hundred eighty-one million, five hundred nineteen thousand, ninety-four".