220302464 has 32 divisors (see below), whose sum is σ = 457971840. Its totient is φ = 105360640.

The previous prime is 220302457. The next prime is 220302469. The reversal of 220302464 is 464203022.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (220302469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34472 + ... + 40359.

It is an arithmetic number, because the mean of its divisors is an integer number (14311620).

Almost surely, 2^220302464 is an apocalyptic number.

It is an amenable number.

220302464 is an abundant number, since it is smaller than the sum of its proper divisors (237669376).

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

220302464 is an equidigital number, since it uses as much as digits as its factorization.

220302464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74868 (or 74856 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 220302464 is about 14842.5895314800. The cubic root of 220302464 is about 603.9576012225.

Adding to 220302464 its reverse (464203022), we get a palindrome (684505486).

The spelling of 220302464 in words is "two hundred twenty million, three hundred two thousand, four hundred sixty-four".