280730048 has 28 divisors (see below), whose sum is σ = 575047872. Its totient is φ = 135836160.

The previous prime is 280730033. The next prime is 280730069. The reversal of 280730048 is 840037082.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 280729996 and 280730023.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 68765 + ... + 72732.

It is an arithmetic number, because the mean of its divisors is an integer number (20537424).

Almost surely, 2^280730048 is an apocalyptic number.

It is an amenable number.

280730048 is an abundant number, since it is smaller than the sum of its proper divisors (294317824).

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

280730048 is a wasteful number, since it uses less digits than its factorization.

280730048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141540 (or 141530 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 280730048 is about 16755.0006863623. Note that the first 3 decimals coincide. The cubic root of 280730048 is about 654.7813484581.

The spelling of 280730048 in words is "two hundred eighty million, seven hundred thirty thousand, forty-eight".