1328760940 has 24 divisors (see below), whose sum is σ = 3005044560. Its totient is φ = 490619328.

The previous prime is 1328760907. The next prime is 1328760941. The reversal of 1328760940 is 490678231.

It is a junction number, because it is equal to n+sod(n) for n = 1328760893 and 1328760902.

It is not an unprimeable number, because it can be changed into a prime (1328760941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2555050 + ... + 2555569.

It is an arithmetic number, because the mean of its divisors is an integer number (125210190).

Almost surely, 2^1328760940 is an apocalyptic number.

1328760940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1328760940 is an abundant number, since it is smaller than the sum of its proper divisors (1676283620).

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

1328760940 is a wasteful number, since it uses less digits than its factorization.

1328760940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110641 (or 5110639 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1328760940 is about 36452.1733234110. The cubic root of 1328760940 is about 1099.3828328597.

The spelling of 1328760940 in words is "one billion, three hundred twenty-eight million, seven hundred sixty thousand, nine hundred forty".