524640 has 48 divisors (see below), whose sum is σ = 1654128. Its totient is φ = 139776.

The previous prime is 524633. The next prime is 524669. The reversal of 524640 is 46425.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

524640 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67 + ... + 1026.

It is an arithmetic number, because the mean of its divisors is an integer number (34461).

2⁵²⁴⁶⁴⁰ 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 524640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (827064).

524640 is an abundant number, since it is smaller than the sum of its proper divisors (1129488).

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

524640 is a wasteful number, since it uses less digits than its factorization.

524640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1103 counting only the distinct ones).

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

The square root of 524640 is about 724.3203711066. The cubic root of 524640 is about 80.6529889004.

The spelling of 524640 in words is "five hundred twenty-four thousand, six hundred forty".