280730912 has 48 divisors (see below), whose sum is σ = 689072832. Its totient is φ = 109374720.

The previous prime is 280730903. The next prime is 280730941. The reversal of 280730912 is 219037082.

280730912 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

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 7 ways as a sum of consecutive naturals, for example, 54503 + ... + 59430.

It is an arithmetic number, because the mean of its divisors is an integer number (14355684).

Almost surely, 2^280730912 is an apocalyptic number.

280730912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

280730912 is an abundant number, since it is smaller than the sum of its proper divisors (408341920).

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

280730912 is a wasteful number, since it uses less digits than its factorization.

280730912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113961 (or 113953 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 280730912 is about 16755.0264696896. The cubic root of 280730912 is about 654.7820201954.

Adding to 280730912 its reverse (219037082), we get a palindrome (499767994).

The spelling of 280730912 in words is "two hundred eighty million, seven hundred thirty thousand, nine hundred twelve".