280438093 has 12 divisors (see below), whose sum is σ = 304365600. Its totient is φ = 258272976.

The previous prime is 280438061. The next prime is 280438097. The reversal of 280438093 is 390834082.

It is not a de Polignac number, because 280438093 - 2⁵ = 280438061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280438097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83358 + ... + 86656.

It is an arithmetic number, because the mean of its divisors is an integer number (25363800).

Almost surely, 2^280438093 is an apocalyptic number.

It is an amenable number.

280438093 is a deficient number, since it is larger than the sum of its proper divisors (23927507).

280438093 is a wasteful number, since it uses less digits than its factorization.

280438093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828 (or 3815 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 280438093 is about 16746.2859464420. The cubic root of 280438093 is about 654.5542821615.

The spelling of 280438093 in words is "two hundred eighty million, four hundred thirty-eight thousand, ninety-three".