220240566 has 64 divisors (see below), whose sum is σ = 602380800. Its totient is φ = 58084128.

The previous prime is 220240541. The next prime is 220240567. The reversal of 220240566 is 665042022.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220240567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17496 + ... + 27323.

It is an arithmetic number, because the mean of its divisors is an integer number (9412200).

Almost surely, 2^220240566 is an apocalyptic number.

220240566 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

220240566 is an abundant number, since it is smaller than the sum of its proper divisors (382140234).

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

220240566 is a wasteful number, since it uses less digits than its factorization.

220240566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44850 (or 44844 counting only the distinct ones).

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

The square root of 220240566 is about 14840.5042367165. The cubic root of 220240566 is about 603.9010316186.

Adding to 220240566 its reverse (665042022), we get a palindrome (885282588).

The spelling of 220240566 in words is "two hundred twenty million, two hundred forty thousand, five hundred sixty-six".