278328 has 16 divisors (see below), whose sum is σ = 695880. Its totient is φ = 92768.

The previous prime is 278321. The next prime is 278329. The reversal of 278328 is 823872.

It is a d-powerful number, because it can be written as 2¹⁰ + 7³ + 3⁸ + 8² + 2¹³ + 8⁶ .

It is a nialpdrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 278295 and 278304.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 278328.

It is not an unprimeable number, because it can be changed into a prime (278321) by changing a digit.

278328 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 in 3 ways as a sum of consecutive naturals, for example, 5775 + ... + 5822.

2²⁷⁸³²⁸ is an apocalyptic number.

It is an amenable number.

278328 is an abundant number, since it is smaller than the sum of its proper divisors (417552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

278328 is a wasteful number, since it uses less digits than its factorization.

278328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11606 (or 11602 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 278328 is about 527.5680050951. The cubic root of 278328 is about 65.2908465493.

It can be divided in two parts, 278 and 328, that added together give a palindrome (606).

The spelling of 278328 in words is "two hundred seventy-eight thousand, three hundred twenty-eight".