1320646352 has 20 divisors (see below), whose sum is σ = 2560448100. Its totient is φ = 659885568.

The previous prime is 1320646351. The next prime is 1320646381. The reversal of 1320646352 is 2536460231.

It can be written as a sum of positive squares in 2 ways, for example, as 441168016 + 879478336 = 21004^2 + 29656^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320646351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1727 + ... + 51422.

It is an arithmetic number, because the mean of its divisors is an integer number (128022405).

Almost surely, 2^1320646352 is an apocalyptic number.

It is an amenable number.

1320646352 is a deficient number, since it is larger than the sum of its proper divisors (1239801748).

1320646352 is a wasteful number, since it uses less digits than its factorization.

1320646352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54710 (or 54704 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 1320646352 is about 36340.6982871821. The cubic root of 1320646352 is about 1097.1403275172.

The spelling of 1320646352 in words is "one billion, three hundred twenty million, six hundred forty-six thousand, three hundred fifty-two".