278012 has 12 divisors (see below), whose sum is σ = 556080. Its totient is φ = 119136.

The previous prime is 277999. The next prime is 278017. The reversal of 278012 is 210872.

278012 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278017) 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, 4937 + ... + 4992.

It is an arithmetic number, because the mean of its divisors is an integer number (46340).

2²⁷⁸⁰¹² is an apocalyptic number.

It is an amenable number.

278012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

278012 is a wasteful number, since it uses less digits than its factorization.

278012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9940 (or 9938 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 278012 is about 527.2684325844. The cubic root of 278012 is about 65.2661278474.

Adding to 278012 its reverse (210872), we get a palindrome (488884).

The spelling of 278012 in words is "two hundred seventy-eight thousand, twelve".