328077785 has 16 divisors (see below), whose sum is σ = 459120000. Its totient is φ = 224966448.

The previous prime is 328077751. The next prime is 328077787. The reversal of 328077785 is 587770823.

It is a happy number.

It is not a de Polignac number, because 328077785 - 2⁶ = 328077721 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (328077787) 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, 93935 + ... + 97364.

It is an arithmetic number, because the mean of its divisors is an integer number (28695000).

Almost surely, 2^328077785 is an apocalyptic number.

328077785 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

328077785 is a deficient number, since it is larger than the sum of its proper divisors (131042215).

328077785 is an equidigital number, since it uses as much as digits as its factorization.

328077785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191325 (or 191311 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 47.

The square root of 328077785 is about 18112.9176280355. The cubic root of 328077785 is about 689.6979599420.

The spelling of 328077785 in words is "three hundred twenty-eight million, seventy-seven thousand, seven hundred eighty-five".