280830872 has 32 divisors (see below), whose sum is σ = 604657920. Its totient is φ = 119780640.

The previous prime is 280830827. The next prime is 280830881. The reversal of 280830872 is 278038082.

280830872 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 68 + ... + 23699.

It is an arithmetic number, because the mean of its divisors is an integer number (18895560).

Almost surely, 2^280830872 is an apocalyptic number.

It is an amenable number.

280830872 is an abundant number, since it is smaller than the sum of its proper divisors (323827048).

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

280830872 is a wasteful number, since it uses less digits than its factorization.

280830872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23991 (or 23987 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 280830872 is about 16758.0091896382. The cubic root of 280830872 is about 654.8597271631.

The spelling of 280830872 in words is "two hundred eighty million, eight hundred thirty thousand, eight hundred seventy-two".