526440 has 64 divisors (see below), whose sum is σ = 1632960. Its totient is φ = 135680.

The previous prime is 526429. The next prime is 526441. The reversal of 526440 is 44625.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (526441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4867 + ... + 4973.

It is an arithmetic number, because the mean of its divisors is an integer number (25515).

2⁵²⁶⁴⁴⁰ 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 526440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816480).

526440 is an abundant number, since it is smaller than the sum of its proper divisors (1106520).

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

526440 is a wasteful number, since it uses less digits than its factorization.

526440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 526440 is about 725.5618512574. The cubic root of 526440 is about 80.7451217072.

The spelling of 526440 in words is "five hundred twenty-six thousand, four hundred forty".