28558252800 has 1296 divisors, whose sum is σ = 130953618432. Its totient is φ = 5765529600.

The previous prime is 28558252777. The next prime is 28558252829. The reversal of 28558252800 is 825285582.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 208454332 + ... + 208454468.

Almost surely, 2^28558252800 is an apocalyptic number.

28558252800 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 28558252800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65476809216).

28558252800 is an abundant number, since it is smaller than the sum of its proper divisors (102395365632).

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

28558252800 is a wasteful number, since it uses less digits than its factorization.

28558252800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 45.

The spelling of 28558252800 in words is "twenty-eight billion, five hundred fifty-eight million, two hundred fifty-two thousand, eight hundred".