280673073 has 16 divisors (see below), whose sum is σ = 437697600. Its totient is φ = 177266880.

The previous prime is 280673033. The next prime is 280673087. The reversal of 280673073 is 370376082.

It is not a de Polignac number, because 280673073 - 2¹⁷ = 280542001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (280673023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273048 + ... + 274073.

It is an arithmetic number, because the mean of its divisors is an integer number (27356100).

Almost surely, 2^280673073 is an apocalyptic number.

It is an amenable number.

280673073 is a deficient number, since it is larger than the sum of its proper divisors (157024527).

280673073 is a wasteful number, since it uses less digits than its factorization.

280673073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547149 (or 547143 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 280673073 is about 16753.3003614213. The cubic root of 280673073 is about 654.7370488523.

The spelling of 280673073 in words is "two hundred eighty million, six hundred seventy-three thousand, seventy-three".