28881936582 has 16 divisors (see below), whose sum is σ = 61161748272. Its totient is φ = 9060999680.

The previous prime is 28881936581. The next prime is 28881936607. The reversal of 28881936582 is 28563918882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28881936581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141578019 + ... + 141578222.

It is an arithmetic number, because the mean of its divisors is an integer number (3822609267).

Almost surely, 2^28881936582 is an apocalyptic number.

28881936582 is an abundant number, since it is smaller than the sum of its proper divisors (32279811690).

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

28881936582 is a wasteful number, since it uses less digits than its factorization.

28881936582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283156263.

The product of its digits is 13271040, while the sum is 60.

The spelling of 28881936582 in words is "twenty-eight billion, eight hundred eighty-one million, nine hundred thirty-six thousand, five hundred eighty-two".