826740 has 48 divisors (see below), whose sum is σ = 2573760. Its totient is φ = 220320.

The previous prime is 826729. The next prime is 826753. The reversal of 826740 is 47628.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226 + ... + 1305.

It is an arithmetic number, because the mean of its divisors is an integer number (53620).

2⁸²⁶⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 826740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1286880).

826740 is an abundant number, since it is smaller than the sum of its proper divisors (1747020).

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

826740 is a wasteful number, since it uses less digits than its factorization.

826740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549 (or 1541 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 826740 is about 909.2524401947. The cubic root of 826740 is about 93.8547628869.

The spelling of 826740 in words is "eight hundred twenty-six thousand, seven hundred forty".