328813765 has 24 divisors (see below), whose sum is σ = 460912032. Its totient is φ = 224532000.

The previous prime is 328813757. The next prime is 328813777. The reversal of 328813765 is 567318823.

It is not a de Polignac number, because 328813765 - 2³ = 328813757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58822 + ... + 64168.

It is an arithmetic number, because the mean of its divisors is an integer number (19204668).

Almost surely, 2^328813765 is an apocalyptic number.

328813765 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

328813765 is a deficient number, since it is larger than the sum of its proper divisors (132098267).

328813765 is a wasteful number, since it uses less digits than its factorization.

328813765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5617 (or 5610 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 328813765 is about 18133.2226865497. Note that the first 3 decimals coincide. The cubic root of 328813765 is about 690.2133100909.

The spelling of 328813765 in words is "three hundred twenty-eight million, eight hundred thirteen thousand, seven hundred sixty-five".