1307984 has 10 divisors (see below), whose sum is σ = 2534250. Its totient is φ = 653984.

The previous prime is 1307981. The next prime is 1307993. The reversal of 1307984 is 4897031.

It can be written as a sum of positive squares in only one way, i.e., 760384 + 547600 = 872^2 + 740^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1307984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40859 + ... + 40890.

It is an arithmetic number, because the mean of its divisors is an integer number (253425).

2^1307984 is an apocalyptic number.

It is an amenable number.

1307984 is a deficient number, since it is larger than the sum of its proper divisors (1226266).

1307984 is an equidigital number, since it uses as much as digits as its factorization.

1307984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81757 (or 81751 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1307984 is about 1143.6712814441. The cubic root of 1307984 is about 109.3622601760.

The spelling of 1307984 in words is "one million, three hundred seven thousand, nine hundred eighty-four".