2220055400 has 24 divisors (see below), whose sum is σ = 5161629270. Its totient is φ = 888022080.

The previous prime is 2220055379. The next prime is 2220055441. The reversal of 2220055400 is 45500222.

It can be written as a sum of positive squares in 3 ways, for example, as 1333564324 + 886491076 = 36518^2 + 29774^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5549939 + ... + 5550338.

Almost surely, 2^2220055400 is an apocalyptic number.

2220055400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220055400 is an abundant number, since it is smaller than the sum of its proper divisors (2941573870).

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

2220055400 is a wasteful number, since it uses less digits than its factorization.

2220055400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11100293 (or 11100284 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 2220055400 is about 47117.4638536498. The cubic root of 2220055400 is about 1304.5316013490.

Adding to 2220055400 its reverse (45500222), we get a palindrome (2265555622).

The spelling of 2220055400 in words is "two billion, two hundred twenty million, fifty-five thousand, four hundred".