28075703538 has 32 divisors (see below), whose sum is σ = 57657600000. Its totient is φ = 9110616336.

The previous prime is 28075703531. The next prime is 28075703573. The reversal of 28075703538 is 83530757082.

It is not an unprimeable number, because it can be changed into a prime (28075703531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348538 + ... + 421461.

It is an arithmetic number, because the mean of its divisors is an integer number (1801800000).

Almost surely, 2^28075703538 is an apocalyptic number.

28075703538 is an abundant number, since it is smaller than the sum of its proper divisors (29581896462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28075703538 is a wasteful number, since it uses less digits than its factorization.

28075703538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770166.

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 28075703538 in words is "twenty-eight billion, seventy-five million, seven hundred three thousand, five hundred thirty-eight".