2220064440 has 96 divisors (see below), whose sum is σ = 7320756240. Its totient is φ = 538193920.

The previous prime is 2220064409. The next prime is 2220064447. The reversal of 2220064440 is 444600222.

2220064440 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2220064440² = 9857372235505027200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2220064440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220064447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61929 + ... + 90968.

Almost surely, 2^2220064440 is an apocalyptic number.

2220064440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220064440 is an abundant number, since it is smaller than the sum of its proper divisors (5100691800).

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

2220064440 is a wasteful number, since it uses less digits than its factorization.

2220064440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152933 (or 152918 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2220064440 is about 47117.5597840126. The cubic root of 2220064440 is about 1304.5333720180.

Adding to 2220064440 its reverse (444600222), we get a palindrome (2664664662).

The spelling of 2220064440 in words is "two billion, two hundred twenty million, sixty-four thousand, four hundred forty".