28531145658882 has 32 divisors (see below), whose sum is σ = 58155955133760. Its totient is φ = 9329832331200.

The previous prime is 28531145658881. The next prime is 28531145658989. The reversal of 28531145658882 is 28885654113582.

It is not an unprimeable number, because it can be changed into a prime (28531145658881) 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, 215902288 + ... + 216034395.

It is an arithmetic number, because the mean of its divisors is an integer number (1817373597930).

Almost surely, 2^{28531145658882} is an apocalyptic number.

28531145658882 is an abundant number, since it is smaller than the sum of its proper divisors (29624809474878).

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

28531145658882 is a wasteful number, since it uses less digits than its factorization.

28531145658882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431936898.

The product of its digits is 147456000, while the sum is 66.

The spelling of 28531145658882 in words is "twenty-eight trillion, five hundred thirty-one billion, one hundred forty-five million, six hundred fifty-eight thousand, eight hundred eighty-two".