1304400022 has 4 divisors (see below), whose sum is σ = 1956600036. Its totient is φ = 652200010.

The previous prime is 1304400011. The next prime is 1304400043. The reversal of 1304400022 is 2200044031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2200044031 = 40471 ⋅54361.

It is a junction number, because it is equal to n+sod(n) for n = 1304399969 and 1304400005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326100004 + ... + 326100007.

It is an arithmetic number, because the mean of its divisors is an integer number (489150009).

Almost surely, 2^1304400022 is an apocalyptic number.

1304400022 is a deficient number, since it is larger than the sum of its proper divisors (652200014).

1304400022 is an equidigital number, since it uses as much as digits as its factorization.

1304400022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652200013.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1304400022 is about 36116.4785381964. The cubic root of 1304400022 is about 1092.6228176817.

Adding to 1304400022 its reverse (2200044031), we get a palindrome (3504444053).

The spelling of 1304400022 in words is "one billion, three hundred four million, four hundred thousand, twenty-two".