1296883836 has 108 divisors (see below), whose sum is σ = 3509814672. Its totient is φ = 403636608.

The previous prime is 1296883813. The next prime is 1296883837. The reversal of 1296883836 is 6383886921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296883837) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 948025 + ... + 949391.

It is an arithmetic number, because the mean of its divisors is an integer number (32498284).

Almost surely, 2^1296883836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1296883836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1754907336).

1296883836 is an abundant number, since it is smaller than the sum of its proper divisors (2212930836).

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

1296883836 is a wasteful number, since it uses less digits than its factorization.

1296883836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488 (or 1464 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 1296883836 is about 36012.2734078258. The cubic root of 1296883836 is about 1090.5201445332.

The spelling of 1296883836 in words is "one billion, two hundred ninety-six million, eight hundred eighty-three thousand, eight hundred thirty-six".