280550308900 has 27 divisors (see below), whose sum is σ = 608805664369. Its totient is φ = 112218004880.

The previous prime is 280550308873. The next prime is 280550308903. The reversal of 280550308900 is 9803055082.

The square root of 280550308900 is 529670.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 100998111204 + 179552197696 = 317802^2 + 423736^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280550308903) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5270217 + ... + 5323183.

Almost surely, 2^280550308900 is an apocalyptic number.

280550308900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

280550308900 is the 529670-th square number.

It is an amenable number.

280550308900 is an abundant number, since it is smaller than the sum of its proper divisors (328255355469).

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

280550308900 is an frugal number, since it uses more digits than its factorization.

280550308900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105948 (or 52974 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 280550308900 in words is "two hundred eighty billion, five hundred fifty million, three hundred eight thousand, nine hundred".