408278 has 16 divisors (see below), whose sum is σ = 677376. Its totient is φ = 183360.

The previous prime is 408271. The next prime is 408283. The reversal of 408278 is 872804.

It is a self number, because there is not a number n which added to its sum of digits gives 408278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408271) 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 7 ways as a sum of consecutive naturals, for example, 875 + ... + 1257.

It is an arithmetic number, because the mean of its divisors is an integer number (42336).

2⁴⁰⁸²⁷⁸ is an apocalyptic number.

408278 is a deficient number, since it is larger than the sum of its proper divisors (269098).

408278 is a wasteful number, since it uses less digits than its factorization.

408278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 408278 is about 638.9663527918. The cubic root of 408278 is about 74.1854370424.

It can be divided in two parts, 408 and 278, that added together give a palindrome (686).

The spelling of 408278 in words is "four hundred eight thousand, two hundred seventy-eight".