28059551800 has 96 divisors (see below), whose sum is σ = 75502310400. Its totient is φ = 9498602880.

The previous prime is 28059551797. The next prime is 28059551803. The reversal of 28059551800 is 815595082.

It is an interprime number because it is at equal distance from previous prime (28059551797) and next prime (28059551803).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28059551803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16252 + ... + 237451.

It is an arithmetic number, because the mean of its divisors is an integer number (786482400).

Almost surely, 2^28059551800 is an apocalyptic number.

28059551800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28059551800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37751155200).

28059551800 is an abundant number, since it is smaller than the sum of its proper divisors (47442758600).

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

28059551800 is a wasteful number, since it uses less digits than its factorization.

28059551800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253805 (or 253796 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 43.

The spelling of 28059551800 in words is "twenty-eight billion, fifty-nine million, five hundred fifty-one thousand, eight hundred".