2220400004 has 12 divisors (see below), whose sum is σ = 3886225728. Its totient is φ = 1110049800.

The previous prime is 2220400003. The next prime is 2220400009. The reversal of 2220400004 is 4000040222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2220400003) 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, 152 + ... + 66639.

It is an arithmetic number, because the mean of its divisors is an integer number (323852144).

Almost surely, 2^2220400004 is an apocalyptic number.

It is an amenable number.

2220400004 is a deficient number, since it is larger than the sum of its proper divisors (1665825724).

2220400004 is a wasteful number, since it uses less digits than its factorization.

2220400004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75106 (or 75104 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 2220400004 is about 47121.1205724142. The cubic root of 2220400004 is about 1304.5990956932.

Adding to 2220400004 its reverse (4000040222), we get a palindrome (6220440226).

The spelling of 2220400004 in words is "two billion, two hundred twenty million, four hundred thousand, four".