1328305577 has 16 divisors (see below), whose sum is σ = 1408264704. Its totient is φ = 1250832000.

The previous prime is 1328305571. The next prime is 1328305607. The reversal of 1328305577 is 7755038231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1328305577 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1328305571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 584798 + ... + 587064.

It is an arithmetic number, because the mean of its divisors is an integer number (88016544).

Almost surely, 2^1328305577 is an apocalyptic number.

It is an amenable number.

1328305577 is a deficient number, since it is larger than the sum of its proper divisors (79959127).

1328305577 is a wasteful number, since it uses less digits than its factorization.

1328305577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 1328305577 is about 36445.9267545771. The cubic root of 1328305577 is about 1099.2572332760.

The spelling of 1328305577 in words is "one billion, three hundred twenty-eight million, three hundred five thousand, five hundred seventy-seven".