278896 has 10 divisors (see below), whose sum is σ = 540392. Its totient is φ = 139440.

The previous prime is 278891. The next prime is 278903. The reversal of 278896 is 698872.

It is a d-powerful number, because it can be written as 2¹⁴ + 7 + 8² + 8⁶ + 9² + 6³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278891) by changing a digit.

278896 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8700 + ... + 8731.

2²⁷⁸⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

278896 is a deficient number, since it is larger than the sum of its proper divisors (261496).

278896 is a wasteful number, since it uses less digits than its factorization.

278896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17439 (or 17433 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 278896 is about 528.1060499559. The cubic root of 278896 is about 65.3352306358.

The spelling of 278896 in words is "two hundred seventy-eight thousand, eight hundred ninety-six".