280250030000 has 100 divisors (see below), whose sum is σ = 678779789688. Its totient is φ = 112056000000.

The previous prime is 280250029981. The next prime is 280250030017. The reversal of 280250030000 is 30052082.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 40026500 + ... + 40033500.

Almost surely, 2^280250030000 is an apocalyptic number.

280250030000 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 280250030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339389894844).

280250030000 is an abundant number, since it is smaller than the sum of its proper divisors (398529759688).

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

280250030000 is an equidigital number, since it uses as much as digits as its factorization.

280250030000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11032 (or 11011 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 280250030000 its reverse (30052082), we get a palindrome (280280082082).

The spelling of 280250030000 in words is "two hundred eighty billion, two hundred fifty million, thirty thousand".