28338989758 has 4 divisors (see below), whose sum is σ = 42508484640. Its totient is φ = 14169494878.

The previous prime is 28338989719. The next prime is 28338989831. The reversal of 28338989758 is 85798983382.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7084747438 + ... + 7084747441.

It is an arithmetic number, because the mean of its divisors is an integer number (10627121160).

Almost surely, 2^28338989758 is an apocalyptic number.

28338989758 is a deficient number, since it is larger than the sum of its proper divisors (14169494882).

28338989758 is a wasteful number, since it uses less digits than its factorization.

28338989758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14169494881.

The product of its digits is 209018880, while the sum is 70.

The spelling of 28338989758 in words is "twenty-eight billion, three hundred thirty-eight million, nine hundred eighty-nine thousand, seven hundred fifty-eight".