840226 has 8 divisors (see below), whose sum is σ = 1267920. Its totient is φ = 417588.

The previous prime is 840223. The next prime is 840239. The reversal of 840226 is 622048.

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

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 840197 and 840206.

It is not an unprimeable number, because it can be changed into a prime (840223) 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, 816 + ... + 1531.

It is an arithmetic number, because the mean of its divisors is an integer number (158490).

2⁸⁴⁰²²⁶ is an apocalyptic number.

840226 is a deficient number, since it is larger than the sum of its proper divisors (427694).

840226 is a wasteful number, since it uses less digits than its factorization.

840226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 840226 is about 916.6384238073. The cubic root of 840226 is about 94.3623407431.

The spelling of 840226 in words is "eight hundred forty thousand, two hundred twenty-six".