278468 has 12 divisors (see below), whose sum is σ = 498960. Its totient is φ = 135912.

The previous prime is 278459. The next prime is 278479. The reversal of 278468 is 864872.

It is an Ulam number.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638 + ... + 981.

It is an arithmetic number, because the mean of its divisors is an integer number (41580).

2²⁷⁸⁴⁶⁸ is an apocalyptic number.

It is an amenable number.

278468 is a deficient number, since it is larger than the sum of its proper divisors (220492).

278468 is a wasteful number, since it uses less digits than its factorization.

278468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666 (or 1664 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 278468 is about 527.7006727303. The cubic root of 278468 is about 65.3017918924.

The spelling of 278468 in words is "two hundred seventy-eight thousand, four hundred sixty-eight".