329778 has 32 divisors (see below), whose sum is σ = 760320. Its totient is φ = 105840.

The previous prime is 329773. The next prime is 329779. The reversal of 329778 is 877923.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329773) by changing a digit.

329778 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1576 + ... + 1772.

It is an arithmetic number, because the mean of its divisors is an integer number (23760).

2³²⁹⁷⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 329778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380160).

329778 is an abundant number, since it is smaller than the sum of its proper divisors (430542).

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

329778 is a wasteful number, since it uses less digits than its factorization.

329778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 233 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 329778 is about 574.2630059476. The cubic root of 329778 is about 69.0887327234.

It can be divided in two parts, 3297 and 78, that added together give a cube (3375 = 15³).

The spelling of 329778 in words is "three hundred twenty-nine thousand, seven hundred seventy-eight".