1296550112 has 192 divisors, whose sum is σ = 3186376704. Its totient is φ = 510935040.

The previous prime is 1296550111. The next prime is 1296550121. The reversal of 1296550112 is 2110556921.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296550111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10208993 + ... + 10209119.

It is an arithmetic number, because the mean of its divisors is an integer number (16595712).

Almost surely, 2^1296550112 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 1296550112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1593188352).

1296550112 is an abundant number, since it is smaller than the sum of its proper divisors (1889826592).

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

1296550112 is a wasteful number, since it uses less digits than its factorization.

1296550112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 1296550112 is about 36007.6396338333. The cubic root of 1296550112 is about 1090.4265961994.

The spelling of 1296550112 in words is "one billion, two hundred ninety-six million, five hundred fifty thousand, one hundred twelve".