1328299305 has 8 divisors (see below), whose sum is σ = 2125278912. Its totient is φ = 708426288.

The previous prime is 1328299249. The next prime is 1328299309. The reversal of 1328299305 is 5039928231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1328299305 - 2⁶ = 1328299241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1328299309) 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, 44276629 + ... + 44276658.

It is an arithmetic number, because the mean of its divisors is an integer number (265659864).

Almost surely, 2^1328299305 is an apocalyptic number.

1328299305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1328299305 is a deficient number, since it is larger than the sum of its proper divisors (796979607).

1328299305 is an equidigital number, since it uses as much as digits as its factorization.

1328299305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88553295.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 1328299305 is about 36445.8407091948. The cubic root of 1328299305 is about 1099.2555031138.

The spelling of 1328299305 in words is "one billion, three hundred twenty-eight million, two hundred ninety-nine thousand, three hundred five".