1296983250 has 96 divisors (see below), whose sum is σ = 3521394864. Its totient is φ = 344448000.

The previous prime is 1296983221. The next prime is 1296983251. The reversal of 1296983250 is 523896921.

It can be written as a sum of positive squares in 8 ways, for example, as 4652649 + 1292330601 = 2157^2 + 35949^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1296983196 and 1296983205.

It is not an unprimeable number, because it can be changed into a prime (1296983251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 622210 + ... + 624290.

Almost surely, 2^1296983250 is an apocalyptic number.

1296983250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1296983250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1760697432).

1296983250 is an abundant number, since it is smaller than the sum of its proper divisors (2224411614).

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

1296983250 is a wasteful number, since it uses less digits than its factorization.

1296983250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381 (or 2368 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1296983250 is about 36013.6536607993. The cubic root of 1296983250 is about 1090.5480088123.

The spelling of 1296983250 in words is "one billion, two hundred ninety-six million, nine hundred eighty-three thousand, two hundred fifty".