816278 has 8 divisors (see below), whose sum is σ = 1288920. Its totient is φ = 386640.

The previous prime is 816271. The next prime is 816317. The reversal of 816278 is 872618.

816278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816271) 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, 10703 + ... + 10778.

It is an arithmetic number, because the mean of its divisors is an integer number (161115).

2⁸¹⁶²⁷⁸ is an apocalyptic number.

816278 is a deficient number, since it is larger than the sum of its proper divisors (472642).

816278 is a wasteful number, since it uses less digits than its factorization.

816278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21502.

The product of its digits is 5376, while the sum is 32.

The square root of 816278 is about 903.4810457337. The cubic root of 816278 is about 93.4571853507.

It can be divided in two parts, 8162 and 78, that multiplied together give a palindrome (636636).

The spelling of 816278 in words is "eight hundred sixteen thousand, two hundred seventy-eight".