28393741838338 has 32 divisors (see below), whose sum is σ = 43219643765760. Its totient is φ = 13987467562320.

The previous prime is 28393741838309. The next prime is 28393741838369. The reversal of 28393741838338 is 83383814739382.

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, 1463358945 + ... + 1463378347.

It is an arithmetic number, because the mean of its divisors is an integer number (1350613867680).

Almost surely, 2^{28393741838338} is an apocalyptic number.

28393741838338 is a deficient number, since it is larger than the sum of its proper divisors (14825901927422).

28393741838338 is a wasteful number, since it uses less digits than its factorization.

28393741838338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25902.

The product of its digits is 501645312, while the sum is 70.

The spelling of 28393741838338 in words is "twenty-eight trillion, three hundred ninety-three billion, seven hundred forty-one million, eight hundred thirty-eight thousand, three hundred thirty-eight".