1326347680 has 72 divisors (see below), whose sum is σ = 3645109188. Its totient is φ = 454745088.

The previous prime is 1326347677. The next prime is 1326347681. The reversal of 1326347680 is 867436231.

It can be written as a sum of positive squares in 2 ways, for example, as 1223040784 + 103306896 = 34972^2 + 10164^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (1326347681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76749 + ... + 92428.

Almost surely, 2^1326347680 is an apocalyptic number.

1326347680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1326347680 is an abundant number, since it is smaller than the sum of its proper divisors (2318761508).

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

1326347680 is a wasteful number, since it uses less digits than its factorization.

1326347680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169206 (or 169191 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 1326347680 is about 36419.0565501085. The cubic root of 1326347680 is about 1098.7168729871.

The spelling of 1326347680 in words is "one billion, three hundred twenty-six million, three hundred forty-seven thousand, six hundred eighty".