532640 has 24 divisors (see below), whose sum is σ = 1258740. Its totient is φ = 212992.

The previous prime is 532639. The next prime is 532663. The reversal of 532640 is 46235.

It can be written as a sum of positive squares in 2 ways, for example, as 524176 + 8464 = 724^2 + 92^2 .

It is a super-3 number, since 3×532640³ = 453338484191232000, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 1505 + ... + 1824.

2⁵³²⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

532640 is an abundant number, since it is smaller than the sum of its proper divisors (726100).

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

532640 is a wasteful number, since it uses less digits than its factorization.

532640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344 (or 3336 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 532640 is about 729.8218960815. The cubic root of 532640 is about 81.0608697571.

Adding to 532640 its reverse (46235), we get a palindrome (578875).

The spelling of 532640 in words is "five hundred thirty-two thousand, six hundred forty".