28080023550 has 96 divisors (see below), whose sum is σ = 70144697952. Its totient is φ = 7433748480.

The previous prime is 28080023527. The next prime is 28080023551. The reversal of 28080023550 is 5532008082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28080023551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23072542 + ... + 23073758.

It is an arithmetic number, because the mean of its divisors is an integer number (730673937).

Almost surely, 2^28080023550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28080023550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35072348976).

28080023550 is an abundant number, since it is smaller than the sum of its proper divisors (42064674402).

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

28080023550 is a wasteful number, since it uses less digits than its factorization.

28080023550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 28080023550 in words is "twenty-eight billion, eighty million, twenty-three thousand, five hundred fifty".