6440226 has 16 divisors (see below), whose sum is σ = 13871424. Its totient is φ = 1981584.

The previous prime is 6440201. The next prime is 6440249. The reversal of 6440226 is 6220446.

It is a junction number, because it is equal to n+sod(n) for n = 6440196 and 6440205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41206 + ... + 41361.

It is an arithmetic number, because the mean of its divisors is an integer number (866964).

Almost surely, 2^6440226 is an apocalyptic number.

6440226 is an abundant number, since it is smaller than the sum of its proper divisors (7431198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6440226 is a wasteful number, since it uses less digits than its factorization.

6440226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82585.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 6440226 is about 2537.7600359372. The cubic root of 6440226 is about 186.0517256996.

It can be divided in two parts, 6440 and 226, that added together give a palindrome (6666).

The spelling of 6440226 in words is "six million, four hundred forty thousand, two hundred twenty-six".