1296949860 has 96 divisors (see below), whose sum is σ = 4058570880. Its totient is φ = 343829376.

The previous prime is 1296949813. The next prime is 1296949877. The reversal of 1296949860 is 689496921.

1296949860 is a `hidden beast` number, since 1 + 2 + 96 + 9 + 498 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1296949797 and 1296949806.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86479 + ... + 100361.

It is an arithmetic number, because the mean of its divisors is an integer number (42276780).

Almost surely, 2^1296949860 is an apocalyptic number.

1296949860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1296949860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2029285440).

1296949860 is an abundant number, since it is smaller than the sum of its proper divisors (2761621020).

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

1296949860 is a wasteful number, since it uses less digits than its factorization.

1296949860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14074 (or 14066 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The square root of 1296949860 is about 36013.1900836346. The cubic root of 1296949860 is about 1090.5386502462.

The spelling of 1296949860 in words is "one billion, two hundred ninety-six million, nine hundred forty-nine thousand, eight hundred sixty".