1322400404 has 12 divisors (see below), whose sum is σ = 2492216244. Its totient is φ = 610338624.

The previous prime is 1322400379. The next prime is 1322400427. The reversal of 1322400404 is 4040042231.

It can be written as a sum of positive squares in 2 ways, for example, as 495952900 + 826447504 = 22270^2 + 28748^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12715337 + ... + 12715440.

It is an arithmetic number, because the mean of its divisors is an integer number (207684687).

Almost surely, 2^1322400404 is an apocalyptic number.

It is an amenable number.

1322400404 is a deficient number, since it is larger than the sum of its proper divisors (1169815840).

1322400404 is a wasteful number, since it uses less digits than its factorization.

1322400404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25430794 (or 25430792 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1322400404 is about 36364.8237174333. The cubic root of 1322400404 is about 1097.6258447822.

Adding to 1322400404 its reverse (4040042231), we get a palindrome (5362442635).

The spelling of 1322400404 in words is "one billion, three hundred twenty-two million, four hundred thousand, four hundred four".