564944240 has 40 divisors (see below), whose sum is σ = 1501139040. Its totient is φ = 193694976.

The previous prime is 564944203. The next prime is 564944243. The reversal of 564944240 is 42449465.

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

It is a junction number, because it is equal to n+sod(n) for n = 564944194 and 564944203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564944243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503855 + ... + 504974.

It is an arithmetic number, because the mean of its divisors is an integer number (37528476).

Almost surely, 2^564944240 is an apocalyptic number.

It is an amenable number.

564944240 is an abundant number, since it is smaller than the sum of its proper divisors (936194800).

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

564944240 is a wasteful number, since it uses less digits than its factorization.

564944240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008849 (or 1008843 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 564944240 is about 23768.5556986536. Note that the first 3 decimals coincide. The cubic root of 564944240 is about 826.6757442060.

The spelling of 564944240 in words is "five hundred sixty-four million, nine hundred forty-four thousand, two hundred forty".