278348 has 12 divisors (see below), whose sum is σ = 556752. Its totient is φ = 119280.

The previous prime is 278347. The next prime is 278353. The reversal of 278348 is 843872.

278348 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278347) 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, 4943 + ... + 4998.

It is an arithmetic number, because the mean of its divisors is an integer number (46396).

2²⁷⁸³⁴⁸ is an apocalyptic number.

278348 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

278348 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.

278348 is a wasteful number, since it uses less digits than its factorization.

278348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9952 (or 9950 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 278348 is about 527.5869596569. The cubic root of 278348 is about 65.2924103944.

It can be divided in two parts, 278 and 348, that added together give a palindrome (626).

The spelling of 278348 in words is "two hundred seventy-eight thousand, three hundred forty-eight".