28681371582 has 8 divisors (see below), whose sum is σ = 57362743176. Its totient is φ = 9560457192.

The previous prime is 28681371547. The next prime is 28681371601. The reversal of 28681371582 is 28517318682.

It is a sphenic number, since it is the product of 3 distinct primes.

28681371582 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2390114293 + ... + 2390114304.

It is an arithmetic number, because the mean of its divisors is an integer number (7170342897).

Almost surely, 2^28681371582 is an apocalyptic number.

28681371582 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28681371582 is a wasteful number, since it uses less digits than its factorization.

28681371582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4780228602.

The product of its digits is 1290240, while the sum is 51.

The spelling of 28681371582 in words is "twenty-eight billion, six hundred eighty-one million, three hundred seventy-one thousand, five hundred eighty-two".