278498 has 8 divisors (see below), whose sum is σ = 455760. Its totient is φ = 126580.

The previous prime is 278497. The next prime is 278501. The reversal of 278498 is 894872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×278498² = 155122272008, which contains 22 as substring.

It is a plaindrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 278498.

It is not an unprimeable number, because it can be changed into a prime (278491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6308 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (56970).

2²⁷⁸⁴⁹⁸ is an apocalyptic number.

278498 is a deficient number, since it is larger than the sum of its proper divisors (177262).

278498 is a wasteful number, since it uses less digits than its factorization.

278498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12672.

The product of its digits is 32256, while the sum is 38.

The square root of 278498 is about 527.7290971701. The cubic root of 278498 is about 65.3041368457.

It can be divided in two parts, 2784 and 98, that added together give a palindrome (2882).

The spelling of 278498 in words is "two hundred seventy-eight thousand, four hundred ninety-eight".