278283083 has 4 divisors (see below), whose sum is σ = 299689488. Its totient is φ = 256876680.

The previous prime is 278283077. The next prime is 278283097. The reversal of 278283083 is 380382872.

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

It is a cyclic number.

It is not a de Polignac number, because 278283083 - 2⁸ = 278282827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 278283083.

It is not an unprimeable number, because it can be changed into a prime (278283053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10703183 + ... + 10703208.

It is an arithmetic number, because the mean of its divisors is an integer number (74922372).

Almost surely, 2^278283083 is an apocalyptic number.

278283083 is a deficient number, since it is larger than the sum of its proper divisors (21406405).

278283083 is a wasteful number, since it uses less digits than its factorization.

278283083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21406404.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 278283083 is about 16681.8189355957. The cubic root of 278283083 is about 652.8733411465.

The spelling of 278283083 in words is "two hundred seventy-eight million, two hundred eighty-three thousand, eighty-three".