328501290 has 32 divisors (see below), whose sum is σ = 849050496. Its totient is φ = 80861760.

The previous prime is 328501259. The next prime is 328501291. The reversal of 328501290 is 92105823.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (328501291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420766 + ... + 421545.

It is an arithmetic number, because the mean of its divisors is an integer number (26532828).

Almost surely, 2^328501290 is an apocalyptic number.

328501290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

328501290 is an abundant number, since it is smaller than the sum of its proper divisors (520549206).

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

328501290 is a wasteful number, since it uses less digits than its factorization.

328501290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842334.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 328501290 is about 18124.6045474101. The cubic root of 328501290 is about 689.9946019321.

The spelling of 328501290 in words is "three hundred twenty-eight million, five hundred one thousand, two hundred ninety".