1296281412 has 36 divisors (see below), whose sum is σ = 3293706780. Its totient is φ = 429852672.

The previous prime is 1296281407. The next prime is 1296281443. The reversal of 1296281412 is 2141826921.

1296281412 is a `hidden beast` number, since 1 + 2 + 9 + 628 + 14 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 481978116 + 814303296 = 21954^2 + 28536^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86337 + ... + 100232.

It is an arithmetic number, because the mean of its divisors is an integer number (91491855).

Almost surely, 2^1296281412 is an apocalyptic number.

1296281412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1296281412 is an abundant number, since it is smaller than the sum of its proper divisors (1997425368).

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

1296281412 is a wasteful number, since it uses less digits than its factorization.

1296281412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186772 (or 186767 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 1296281412 is about 36003.9082878512. The cubic root of 1296281412 is about 1090.3512634975.

The spelling of 1296281412 in words is "one billion, two hundred ninety-six million, two hundred eighty-one thousand, four hundred twelve".