978278 has 8 divisors (see below), whose sum is σ = 1677072. Its totient is φ = 419256.

The previous prime is 978277. The next prime is 978283. The reversal of 978278 is 872879.

978278 is nontrivially palindromic in base 13.

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

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34925 + ... + 34952.

It is an arithmetic number, because the mean of its divisors is an integer number (209634).

2⁹⁷⁸²⁷⁸ is an apocalyptic number.

978278 is a deficient number, since it is larger than the sum of its proper divisors (698794).

978278 is a wasteful number, since it uses less digits than its factorization.

978278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69886.

The product of its digits is 56448, while the sum is 41.

The square root of 978278 is about 989.0793699193. The cubic root of 978278 is about 99.2706264089.

It can be divided in two parts, 9 and 78278, that added together give a palindrome (78287).

The spelling of 978278 in words is "nine hundred seventy-eight thousand, two hundred seventy-eight".