280308007 has 16 divisors (see below), whose sum is σ = 340381440. Its totient is φ = 225479808.

The previous prime is 280307977. The next prime is 280308029. The reversal of 280308007 is 700803082.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 280308007 - 2¹⁵ = 280275239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280308307) by changing a digit.

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, 4383 + ... + 24079.

It is an arithmetic number, because the mean of its divisors is an integer number (21273840).

Almost surely, 2^280308007 is an apocalyptic number.

280308007 is a deficient number, since it is larger than the sum of its proper divisors (60073433).

280308007 is a wasteful number, since it uses less digits than its factorization.

280308007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19830.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 280308007 is about 16742.4014705179. The cubic root of 280308007 is about 654.4530577800.

The spelling of 280308007 in words is "two hundred eighty million, three hundred eight thousand, seven".