328662490 has 32 divisors (see below), whose sum is σ = 654328080. Its totient is φ = 118070784.

The previous prime is 328662473. The next prime is 328662511. The reversal of 328662490 is 94266823.

It can be written as a sum of positive squares in 8 ways, for example, as 243266409 + 85396081 = 15597^2 + 9241^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29355 + ... + 38974.

Almost surely, 2^328662490 is an apocalyptic number.

328662490 is a deficient number, since it is larger than the sum of its proper divisors (325665590).

328662490 is a wasteful number, since it uses less digits than its factorization.

328662490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68386.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 328662490 is about 18129.0509955706. The cubic root of 328662490 is about 690.1074466856.

The spelling of 328662490 in words is "three hundred twenty-eight million, six hundred sixty-two thousand, four hundred ninety".