28115748800 has 42 divisors (see below), whose sum is σ = 69182318328. Its totient is φ = 11246298880.

The previous prime is 28115748799. The next prime is 28115748839. The reversal of 28115748800 is 884751182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8784572 + ... + 8787771.

Almost surely, 2^28115748800 is an apocalyptic number.

28115748800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28115748800 is an abundant number, since it is smaller than the sum of its proper divisors (41066569528).

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

28115748800 is a wasteful number, since it uses less digits than its factorization.

28115748800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17572365 (or 17572350 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 44.

The spelling of 28115748800 in words is "twenty-eight billion, one hundred fifteen million, seven hundred forty-eight thousand, eight hundred".