280426238 has 4 divisors (see below), whose sum is σ = 420639360. Its totient is φ = 140213118.

The previous prime is 280426231. The next prime is 280426241. The reversal of 280426238 is 832624082.

280426238 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 280426198 and 280426207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280426231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70106558 + ... + 70106561.

It is an arithmetic number, because the mean of its divisors is an integer number (105159840).

Almost surely, 2^280426238 is an apocalyptic number.

280426238 is a deficient number, since it is larger than the sum of its proper divisors (140213122).

280426238 is a wasteful number, since it uses less digits than its factorization.

280426238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140213121.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 280426238 is about 16745.9319836192. The cubic root of 280426238 is about 654.5450586756.

The spelling of 280426238 in words is "two hundred eighty million, four hundred twenty-six thousand, two hundred thirty-eight".