280042968 has 64 divisors (see below), whose sum is σ = 711970560. Its totient is φ = 91780736.

The previous prime is 280042907. The next prime is 280042979. The reversal of 280042968 is 869240082.

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 15 ways as a sum of consecutive naturals, for example, 428530 + ... + 429182.

It is an arithmetic number, because the mean of its divisors is an integer number (11124540).

Almost surely, 2^280042968 is an apocalyptic number.

It is an amenable number.

280042968 is an abundant number, since it is smaller than the sum of its proper divisors (431927592).

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

280042968 is a wasteful number, since it uses less digits than its factorization.

280042968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936 (or 932 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 280042968 is about 16734.4843960010. The cubic root of 280042968 is about 654.2467248921.

The spelling of 280042968 in words is "two hundred eighty million, forty-two thousand, nine hundred sixty-eight".