1296239622 has 32 divisors (see below), whose sum is σ = 2823033600. Its totient is φ = 395222688.

The previous prime is 1296239599. The next prime is 1296239627. The reversal of 1296239622 is 2269326921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296239627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192738 + ... + 199349.

It is an arithmetic number, because the mean of its divisors is an integer number (88219800).

Almost surely, 2^1296239622 is an apocalyptic number.

1296239622 is an abundant number, since it is smaller than the sum of its proper divisors (1526793978).

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

1296239622 is a wasteful number, since it uses less digits than its factorization.

1296239622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392140.

The product of its digits is 139968, while the sum is 42.

The square root of 1296239622 is about 36003.3279295123. The cubic root of 1296239622 is about 1090.3395463224.

The spelling of 1296239622 in words is "one billion, two hundred ninety-six million, two hundred thirty-nine thousand, six hundred twenty-two".