564026220 has 96 divisors (see below), whose sum is σ = 1815307200. Its totient is φ = 145216512.

The previous prime is 564026209. The next prime is 564026257. The reversal of 564026220 is 22620465.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2349 + ... + 33668.

It is an arithmetic number, because the mean of its divisors is an integer number (18909450).

Almost surely, 2^564026220 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 564026220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (907653600).

564026220 is an abundant number, since it is smaller than the sum of its proper divisors (1251280980).

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

564026220 is a wasteful number, since it uses less digits than its factorization.

564026220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36064 (or 36056 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 564026220 is about 23749.2361982444. The cubic root of 564026220 is about 826.2277257696.

Adding to 564026220 its reverse (22620465), we get a palindrome (586646685).

The spelling of 564026220 in words is "five hundred sixty-four million, twenty-six thousand, two hundred twenty".