28575247800 has 192 divisors, whose sum is σ = 97724102400. Its totient is φ = 6849356800.

The previous prime is 28575247769. The next prime is 28575247843. The reversal of 28575247800 is 874257582.

It is a self number, because there is not a number n which added to its sum of digits gives 28575247800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 563077 + ... + 611723.

It is an arithmetic number, because the mean of its divisors is an integer number (508979700).

Almost surely, 2^28575247800 is an apocalyptic number.

28575247800 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 28575247800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48862051200).

28575247800 is an abundant number, since it is smaller than the sum of its proper divisors (69148854600).

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

28575247800 is a wasteful number, since it uses less digits than its factorization.

28575247800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48766 (or 48757 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 48.

The spelling of 28575247800 in words is "twenty-eight billion, five hundred seventy-five million, two hundred forty-seven thousand, eight hundred".