280275048 has 48 divisors (see below), whose sum is σ = 761155200. Its totient is φ = 93169440.

The previous prime is 280275041. The next prime is 280275049. The reversal of 280275048 is 840572082.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (280275041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22153 + ... + 32423.

It is an arithmetic number, because the mean of its divisors is an integer number (15857400).

Almost surely, 2^280275048 is an apocalyptic number.

It is an amenable number.

280275048 is an abundant number, since it is smaller than the sum of its proper divisors (480880152).

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

280275048 is a wasteful number, since it uses less digits than its factorization.

280275048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10662 (or 10655 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 280275048 is about 16741.4171443161. The cubic root of 280275048 is about 654.4274062784.

The spelling of 280275048 in words is "two hundred eighty million, two hundred seventy-five thousand, forty-eight".