778226 has 16 divisors (see below), whose sum is σ = 1264896. Its totient is φ = 357696.

The previous prime is 778223. The next prime is 778237. The reversal of 778226 is 622877.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 778192 and 778201.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 778226.

It is not an unprimeable number, because it can be changed into a prime (778223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1355 + ... + 1841.

It is an arithmetic number, because the mean of its divisors is an integer number (79056).

2⁷⁷⁸²²⁶ is an apocalyptic number.

778226 is a deficient number, since it is larger than the sum of its proper divisors (486670).

778226 is a wasteful number, since it uses less digits than its factorization.

778226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553.

The product of its digits is 9408, while the sum is 32.

The square root of 778226 is about 882.1711852016. The cubic root of 778226 is about 91.9818016935.

The spelling of 778226 in words is "seven hundred seventy-eight thousand, two hundred twenty-six".