28131580296 has 48 divisors (see below), whose sum is σ = 76215587760. Its totient is φ = 9374006880.

The previous prime is 28131580289. The next prime is 28131580307. The reversal of 28131580296 is 69208513182.

28131580296 is a `hidden beast` number, since 281 + 3 + 1 + 5 + 80 + 296 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151911 + ... + 281673.

It is an arithmetic number, because the mean of its divisors is an integer number (1587824745).

Almost surely, 2^28131580296 is an apocalyptic number.

It is an amenable number.

28131580296 is an abundant number, since it is smaller than the sum of its proper divisors (48084007464).

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

28131580296 is a wasteful number, since it uses less digits than its factorization.

28131580296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132786 (or 132779 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 28131580296 in words is "twenty-eight billion, one hundred thirty-one million, five hundred eighty thousand, two hundred ninety-six".