1304400222 has 24 divisors (see below), whose sum is σ = 2923656840. Its totient is φ = 419806800.

The previous prime is 1304400221. The next prime is 1304400233. The reversal of 1304400222 is 2220044031.

1304400222 is a `hidden beast` number, since 1 + 3 + 0 + 440 + 0 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1304400195 and 1304400204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304400221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1248904 + ... + 1249947.

It is an arithmetic number, because the mean of its divisors is an integer number (121819035).

Almost surely, 2^1304400222 is an apocalyptic number.

1304400222 is an abundant number, since it is smaller than the sum of its proper divisors (1619256618).

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

1304400222 is a wasteful number, since it uses less digits than its factorization.

1304400222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498888 (or 2498885 counting only the distinct ones).

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

The square root of 1304400222 is about 36116.4813070155. The cubic root of 1304400222 is about 1092.6228735246.

Adding to 1304400222 its reverse (2220044031), we get a palindrome (3524444253).

The spelling of 1304400222 in words is "one billion, three hundred four million, four hundred thousand, two hundred twenty-two".