2204123400 has 120 divisors (see below), whose sum is σ = 7655303370. Its totient is φ = 587761920.

The previous prime is 2204123399. The next prime is 2204123401. The reversal of 2204123400 is 43214022.

2204123400 is a `hidden beast` number, since 220 + 41 + 2 + 3 + 400 = 666.

It is an interprime number because it is at equal distance from previous prime (2204123399) and next prime (2204123401).

It can be written as a sum of positive squares in 3 ways, for example, as 1141493796 + 1062629604 = 33786^2 + 32598^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2204123401) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 51829 + ... + 84228.

Almost surely, 2^2204123400 is an apocalyptic number.

2204123400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2204123400 is an abundant number, since it is smaller than the sum of its proper divisors (5451179970).

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

2204123400 is a wasteful number, since it uses less digits than its factorization.

2204123400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136085 (or 136067 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2204123400 is about 46948.0926130125. The cubic root of 2204123400 is about 1301.4034940892.

Adding to 2204123400 its reverse (43214022), we get a palindrome (2247337422).

The spelling of 2204123400 in words is "two billion, two hundred four million, one hundred twenty-three thousand, four hundred".