328242780 has 120 divisors (see below), whose sum is σ = 1049412672. Its totient is φ = 85857408.

The previous prime is 328242767. The next prime is 328242781. The reversal of 328242780 is 87242823.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328242781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 83949 + ... + 87771.

Almost surely, 2^328242780 is an apocalyptic number.

328242780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328242780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524706336).

328242780 is an abundant number, since it is smaller than the sum of its proper divisors (721169892).

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

328242780 is a wasteful number, since it uses less digits than its factorization.

328242780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897 (or 3886 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 328242780 is about 18117.4716779136. The cubic root of 328242780 is about 689.8135602140.

The spelling of 328242780 in words is "three hundred twenty-eight million, two hundred forty-two thousand, seven hundred eighty".