328229690 has 8 divisors (see below), whose sum is σ = 590813460. Its totient is φ = 131291872.

The previous prime is 328229653. The next prime is 328229749. The reversal of 328229690 is 96922823.

It can be written as a sum of positive squares in 2 ways, for example, as 316946809 + 11282881 = 17803^2 + 3359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×328229690² = 215469458794992200, which contains 22 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16411475 + ... + 16411494.

Almost surely, 2^328229690 is an apocalyptic number.

328229690 is a deficient number, since it is larger than the sum of its proper divisors (262583770).

328229690 is a wasteful number, since it uses less digits than its factorization.

328229690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32822976.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 328229690 is about 18117.1104208149. The cubic root of 328229690 is about 689.8043903962.

The spelling of 328229690 in words is "three hundred twenty-eight million, two hundred twenty-nine thousand, six hundred ninety".