1296216950 has 96 divisors (see below), whose sum is σ = 2863626240. Its totient is φ = 427161600.

The previous prime is 1296216937. The next prime is 1296216959. The reversal of 1296216950 is 596126921.

It is a junction number, because it is equal to n+sod(n) for n = 1296216898 and 1296216907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296216959) 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, 2093741 + ... + 2094359.

It is an arithmetic number, because the mean of its divisors is an integer number (29829440).

Almost surely, 2^1296216950 is an apocalyptic number.

1296216950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1296216950 is an abundant number, since it is smaller than the sum of its proper divisors (1567409290).

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

1296216950 is a wasteful number, since it uses less digits than its factorization.

1296216950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 1296216950 is about 36003.0130683530. The cubic root of 1296216950 is about 1090.3331893902. Note that the first 3 decimals are identical.

The spelling of 1296216950 in words is "one billion, two hundred ninety-six million, two hundred sixteen thousand, nine hundred fifty".