2220164240 has 80 divisors (see below), whose sum is σ = 6155820288. Its totient is φ = 728099328.

The previous prime is 2220164213. The next prime is 2220164251. The reversal of 2220164240 is 424610222.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73307 + ... + 99066.

Almost surely, 2^2220164240 is an apocalyptic number.

2220164240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220164240 is an abundant number, since it is smaller than the sum of its proper divisors (3935656048).

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

2220164240 is a wasteful number, since it uses less digits than its factorization.

2220164240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172416 (or 172410 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2220164240 is about 47118.6188252585. The cubic root of 2220164240 is about 1304.5529195707.

Adding to 2220164240 its reverse (424610222), we get a palindrome (2644774462).

The spelling of 2220164240 in words is "two billion, two hundred twenty million, one hundred sixty-four thousand, two hundred forty".