28920577200 has 240 divisors, whose sum is σ = 96859205376. Its totient is φ = 7362432000.

The previous prime is 28920577193. The next prime is 28920577211. The reversal of 28920577200 is 277502982.

It is a happy number.

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

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, 27516675 + ... + 27517725.

Almost surely, 2^28920577200 is an apocalyptic number.

28920577200 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 28920577200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48429602688).

28920577200 is an abundant number, since it is smaller than the sum of its proper divisors (67938628176).

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

28920577200 is a wasteful number, since it uses less digits than its factorization.

28920577200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092 (or 2081 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 28920577200 in words is "twenty-eight billion, nine hundred twenty million, five hundred seventy-seven thousand, two hundred".