328445775 has 108 divisors (see below), whose sum is σ = 707139264. Its totient is φ = 145303200.

The previous prime is 328445771. The next prime is 328445779. The reversal of 328445775 is 577544823.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

328445775 is a `hidden beast` number, since 32 + 8 + 44 + 577 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (328445771) and next prime (328445779).

It is not a de Polignac number, because 328445775 - 2² = 328445771 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 328445775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328445771) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 10595010 + ... + 10595040.

Almost surely, 2^328445775 is an apocalyptic number.

328445775 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

328445775 is an abundant number, since it is smaller than the sum of its proper divisors (378693489).

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

328445775 is an equidigital number, since it uses as much as digits as its factorization.

328445775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 46 counting only the distinct ones).

The product of its digits is 940800, while the sum is 45.

The square root of 328445775 is about 18123.0730010117. The cubic root of 328445775 is about 689.9557312494.

The spelling of 328445775 in words is "three hundred twenty-eight million, four hundred forty-five thousand, seven hundred seventy-five".