28595278800 has 240 divisors, whose sum is σ = 111031018560. Its totient is φ = 6932160000.

The previous prime is 28595278799. The next prime is 28595278807. The reversal of 28595278800 is 887259582.

28595278800 is a `hidden beast` number, since 28 + 595 + 27 + 8 + 8 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28595278807) 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, 1551 + ... + 239150.

It is an arithmetic number, because the mean of its divisors is an integer number (462629244).

Almost surely, 2^28595278800 is an apocalyptic number.

28595278800 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 28595278800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55515509280).

28595278800 is an abundant number, since it is smaller than the sum of its proper divisors (82435739760).

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

28595278800 is a wasteful number, since it uses less digits than its factorization.

28595278800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240739 (or 240722 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 28595278800 in words is "twenty-eight billion, five hundred ninety-five million, two hundred seventy-eight thousand, eight hundred".