328280290 has 64 divisors (see below), whose sum is σ = 693100800. Its totient is φ = 110847744.

The previous prime is 328280287. The next prime is 328280299. The reversal of 328280290 is 92082823.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (328280299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69339 + ... + 73921.

It is an arithmetic number, because the mean of its divisors is an integer number (10829700).

Almost surely, 2^328280290 is an apocalyptic number.

328280290 is an abundant number, since it is smaller than the sum of its proper divisors (364820510).

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

328280290 is a wasteful number, since it uses less digits than its factorization.

328280290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4651.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 328280290 is about 18118.5068369333. The cubic root of 328280290 is about 689.8398354008.

The spelling of 328280290 in words is "three hundred twenty-eight million, two hundred eighty thousand, two hundred ninety".