2220307264 has 56 divisors (see below), whose sum is σ = 5104392128. Its totient is φ = 938511360.

The previous prime is 2220307261. The next prime is 2220307267. The reversal of 2220307264 is 4627030222.

It is an interprime number because it is at equal distance from previous prime (2220307261) and next prime (2220307267).

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220307261) 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, 1242 + ... + 66649.

Almost surely, 2^2220307264 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 2220307264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2552196064).

2220307264 is an abundant number, since it is smaller than the sum of its proper divisors (2884084864).

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

2220307264 is an equidigital number, since it uses as much as digits as its factorization.

2220307264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67983 (or 67973 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 2220307264 is about 47120.1365023490. The cubic root of 2220307264 is about 1304.5809322686.

Adding to 2220307264 its reverse (4627030222), we get a palindrome (6847337486).

The spelling of 2220307264 in words is "two billion, two hundred twenty million, three hundred seven thousand, two hundred sixty-four".