278363241 has 12 divisors (see below), whose sum is σ = 433009668. Its totient is φ = 171300384.

The previous prime is 278363233. The next prime is 278363249. The reversal of 278363241 is 142363872.

It is a happy number.

278363241 is a `hidden beast` number, since 278 + 363 + 24 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (278363233) and next prime (278363249).

It can be written as a sum of positive squares in 2 ways, for example, as 83174400 + 195188841 = 9120^2 + 13971^2 .

It is not a de Polignac number, because 278363241 - 2³ = 278363233 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 278363196 and 278363205.

It is not an unprimeable number, because it can be changed into a prime (278363249) 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, 1189470 + ... + 1189703.

It is an arithmetic number, because the mean of its divisors is an integer number (36084139).

Almost surely, 2^278363241 is an apocalyptic number.

It is an amenable number.

278363241 is a deficient number, since it is larger than the sum of its proper divisors (154646427).

278363241 is a wasteful number, since it uses less digits than its factorization.

278363241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379192 (or 2379189 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 278363241 is about 16684.2213183595. The cubic root of 278363241 is about 652.9360207230.

The spelling of 278363241 in words is "two hundred seventy-eight million, three hundred sixty-three thousand, two hundred forty-one".