328999490 has 16 divisors (see below), whose sum is σ = 612620280. Its totient is φ = 127061760.

The previous prime is 328999481. The next prime is 328999507. The reversal of 328999490 is 94999823.

It can be written as a sum of positive squares in 4 ways, for example, as 327211921 + 1787569 = 18089^2 + 1337^2 .

It is a super-3 number, since 3×328999490³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 566951 + ... + 567530.

Almost surely, 2^328999490 is an apocalyptic number.

328999490 is a deficient number, since it is larger than the sum of its proper divisors (283620790).

328999490 is a wasteful number, since it uses less digits than its factorization.

328999490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134517.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 328999490 is about 18138.3430886065. The cubic root of 328999490 is about 690.3432374773.

The spelling of 328999490 in words is "three hundred twenty-eight million, nine hundred ninety-nine thousand, four hundred ninety".