328138205 has 8 divisors (see below), whose sum is σ = 394121400. Its totient is φ = 262273536.

The previous prime is 328138201. The next prime is 328138207. The reversal of 328138205 is 502831823.

It can be written as a sum of positive squares in 4 ways, for example, as 43811161 + 284327044 = 6619^2 + 16862^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 328138205 - 2² = 328138201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328138201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23420 + ... + 34709.

It is an arithmetic number, because the mean of its divisors is an integer number (49265175).

Almost surely, 2^328138205 is an apocalyptic number.

It is an amenable number.

328138205 is a deficient number, since it is larger than the sum of its proper divisors (65983195).

328138205 is a wasteful number, since it uses less digits than its factorization.

328138205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59263.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 328138205 is about 18114.5854216982. The cubic root of 328138205 is about 689.7402964394.

The spelling of 328138205 in words is "three hundred twenty-eight million, one hundred thirty-eight thousand, two hundred five".