280427872 has 12 divisors (see below), whose sum is σ = 552092436. Its totient is φ = 140213920.

The previous prime is 280427857. The next prime is 280427879. The reversal of 280427872 is 278724082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280427879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4381654 + ... + 4381717.

It is an arithmetic number, because the mean of its divisors is an integer number (46007703).

Almost surely, 2^280427872 is an apocalyptic number.

It is an amenable number.

280427872 is a deficient number, since it is larger than the sum of its proper divisors (271664564).

280427872 is an equidigital number, since it uses as much as digits as its factorization.

280427872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8763381 (or 8763373 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 280427872 is about 16745.9807715165. The cubic root of 280427872 is about 654.5463299839.

The spelling of 280427872 in words is "two hundred eighty million, four hundred twenty-seven thousand, eight hundred seventy-two".