564489420 has 96 divisors (see below), whose sum is σ = 1825721856. Its totient is φ = 128793600.

The previous prime is 564489413. The next prime is 564489421. The reversal of 564489420 is 24984465.

It is not an unprimeable number, because it can be changed into a prime (564489421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13936 + ... + 36375.

It is an arithmetic number, because the mean of its divisors is an integer number (19017936).

Almost surely, 2^564489420 is an apocalyptic number.

It is an amenable number.

564489420 is an abundant number, since it is smaller than the sum of its proper divisors (1261232436).

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

564489420 is a wasteful number, since it uses less digits than its factorization.

564489420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50351 (or 50349 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 564489420 is about 23758.9860894778. The cubic root of 564489420 is about 826.4538405327.

It can be divided in two parts, 564 and 489420, that added together give a palindrome (489984).

The spelling of 564489420 in words is "five hundred sixty-four million, four hundred eighty-nine thousand, four hundred twenty".