826240 has 32 divisors (see below), whose sum is σ = 1976760. Its totient is φ = 330240.

The previous prime is 826211. The next prime is 826271. The reversal of 826240 is 42628.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6 + ... + 1285.

2⁸²⁶²⁴⁰ is an apocalyptic number.

826240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 826240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (988380).

826240 is an abundant number, since it is smaller than the sum of its proper divisors (1150520).

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

826240 is a wasteful number, since it uses less digits than its factorization.

826240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310 (or 1298 counting only the distinct ones).

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

The square root of 826240 is about 908.9774474650. The cubic root of 826240 is about 93.8358384186.

Adding to 826240 its reverse (42628), we get a palindrome (868868).

The spelling of 826240 in words is "eight hundred twenty-six thousand, two hundred forty".