28079244828 has 36 divisors (see below), whose sum is σ = 75153274560. Its totient is φ = 8809174656.

The previous prime is 28079244779. The next prime is 28079244899. The reversal of 28079244828 is 82844297082.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×28079244828² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 22939948 + ... + 22941171.

It is an arithmetic number, because the mean of its divisors is an integer number (2087590960).

Almost surely, 2^28079244828 is an apocalyptic number.

It is an amenable number.

28079244828 is an abundant number, since it is smaller than the sum of its proper divisors (47074029732).

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

28079244828 is a wasteful number, since it uses less digits than its factorization.

28079244828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45881146 (or 45881141 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 28079244828 in words is "twenty-eight billion, seventy-nine million, two hundred forty-four thousand, eight hundred twenty-eight".