564240 has 40 divisors (see below), whose sum is σ = 1749888. Its totient is φ = 150400.

The previous prime is 564233. The next prime is 564251. The reversal of 564240 is 42465.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

564240 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, 936 + ... + 1415.

2⁵⁶⁴²⁴⁰ is an apocalyptic number.

It is an amenable number.

564240 is an abundant number, since it is smaller than the sum of its proper divisors (1185648).

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

564240 is a wasteful number, since it uses less digits than its factorization.

564240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367 (or 2361 counting only the distinct ones).

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

The square root of 564240 is about 751.1591043181. The cubic root of 564240 is about 82.6332099553.

The spelling of 564240 in words is "five hundred sixty-four thousand, two hundred forty".