524420 has 24 divisors (see below), whose sum is σ = 1186584. Its totient is φ = 193536.

The previous prime is 524413. The next prime is 524429. The reversal of 524420 is 24425.

It can be written as a sum of positive squares in 4 ways, for example, as 51076 + 473344 = 226^2 + 688^2 .

It is not an unprimeable number, because it can be changed into a prime (524429) by changing a digit.

524420 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 749 + ... + 1268.

It is an arithmetic number, because the mean of its divisors is an integer number (49441).

2⁵²⁴⁴²⁰ is an apocalyptic number.

It is an amenable number.

524420 is an abundant number, since it is smaller than the sum of its proper divisors (662164).

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

524420 is a wasteful number, since it uses less digits than its factorization.

524420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039 (or 2037 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 524420 is about 724.1684886820. The cubic root of 524420 is about 80.6417137795.

Adding to 524420 its reverse (24425), we get a palindrome (548845).

The spelling of 524420 in words is "five hundred twenty-four thousand, four hundred twenty".