805426 has 8 divisors (see below), whose sum is σ = 1279260. Its totient is φ = 379008.

The previous prime is 805421. The next prime is 805451. The reversal of 805426 is 624508.

It can be written as a sum of positive squares in 2 ways, for example, as 783225 + 22201 = 885^2 + 149^2 .

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

It is a super-2 number, since 2×805426² = 1297422082952, which contains 22 as substring.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 805426.

It is not an unprimeable number, because it can be changed into a prime (805421) 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, 11811 + ... + 11878.

2⁸⁰⁵⁴²⁶ is an apocalyptic number.

805426 is a deficient number, since it is larger than the sum of its proper divisors (473834).

805426 is a wasteful number, since it uses less digits than its factorization.

805426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23708.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 805426 is about 897.4552913655. The cubic root of 805426 is about 93.0411811299.

The spelling of 805426 in words is "eight hundred five thousand, four hundred twenty-six".