1296684120 has 64 divisors (see below), whose sum is σ = 4015549440. Its totient is φ = 334627200.

The previous prime is 1296684091. The next prime is 1296684143. The reversal of 1296684120 is 214866921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170566 + ... + 178005.

It is an arithmetic number, because the mean of its divisors is an integer number (62742960).

Almost surely, 2^1296684120 is an apocalyptic number.

1296684120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1296684120 is an abundant number, since it is smaller than the sum of its proper divisors (2718865320).

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

1296684120 is a wasteful number, since it uses less digits than its factorization.

1296684120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348616 (or 348612 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 1296684120 is about 36009.5004130854. The cubic root of 1296684120 is about 1090.4641627776.

The spelling of 1296684120 in words is "one billion, two hundred ninety-six million, six hundred eighty-four thousand, one hundred twenty".