1320681752 has 16 divisors (see below), whose sum is σ = 2666761440. Its totient is φ = 609545376.

The previous prime is 1320681751. The next prime is 1320681829. The reversal of 1320681752 is 2571860231.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320681751) 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 in 3 ways as a sum of consecutive naturals, for example, 6349328 + ... + 6349535.

It is an arithmetic number, because the mean of its divisors is an integer number (166672590).

Almost surely, 2^1320681752 is an apocalyptic number.

It is an amenable number.

1320681752 is an abundant number, since it is smaller than the sum of its proper divisors (1346079688).

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

1320681752 is a wasteful number, since it uses less digits than its factorization.

1320681752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12698882 (or 12698878 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1320681752 is about 36341.1853411525. The cubic root of 1320681752 is about 1097.1501303991.

The spelling of 1320681752 in words is "one billion, three hundred twenty million, six hundred eighty-one thousand, seven hundred fifty-two".