1296078236 has 24 divisors (see below), whose sum is σ = 2389255680. Its totient is φ = 613483632.

The previous prime is 1296078229. The next prime is 1296078241. The reversal of 1296078236 is 6328706921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113651 + ... + 124533.

It is an arithmetic number, because the mean of its divisors is an integer number (99552320).

Almost surely, 2^1296078236 is an apocalyptic number.

It is an amenable number.

1296078236 is a deficient number, since it is larger than the sum of its proper divisors (1093177444).

1296078236 is a wasteful number, since it uses less digits than its factorization.

1296078236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12473 (or 12471 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 1296078236 is about 36001.0865947127. The cubic root of 1296078236 is about 1090.2942941848.

The spelling of 1296078236 in words is "one billion, two hundred ninety-six million, seventy-eight thousand, two hundred thirty-six".