278833483 has 4 divisors (see below), whose sum is σ = 279122800. Its totient is φ = 278544168.

The previous prime is 278833459. The next prime is 278833537. The reversal of 278833483 is 384338872.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-278833483 is a prime.

It is a super-2 number, since 2×278833483² = 155496222483822578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (278833403) 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, 143208 + ... + 145141.

It is an arithmetic number, because the mean of its divisors is an integer number (69780700).

Almost surely, 2^278833483 is an apocalyptic number.

278833483 is a deficient number, since it is larger than the sum of its proper divisors (289317).

278833483 is an equidigital number, since it uses as much as digits as its factorization.

278833483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289316.

The product of its digits is 774144, while the sum is 46.

The square root of 278833483 is about 16698.3077885156. The cubic root of 278833483 is about 653.3034844813.

The spelling of 278833483 in words is "two hundred seventy-eight million, eight hundred thirty-three thousand, four hundred eighty-three".