28891082826 has 48 divisors (see below), whose sum is σ = 62885681664. Its totient is φ = 9586073952.

The previous prime is 28891082809. The next prime is 28891082839. The reversal of 28891082826 is 62828019882.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6494535 + ... + 6498981.

It is an arithmetic number, because the mean of its divisors is an integer number (1310118368).

Almost surely, 2^28891082826 is an apocalyptic number.

28891082826 is an abundant number, since it is smaller than the sum of its proper divisors (33994598838).

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

28891082826 is a wasteful number, since it uses less digits than its factorization.

28891082826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6035 (or 6032 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 54.

The spelling of 28891082826 in words is "twenty-eight billion, eight hundred ninety-one million, eighty-two thousand, eight hundred twenty-six".