328257862690 has 8 divisors (see below), whose sum is σ = 590864152860. Its totient is φ = 131303145072.

The previous prime is 328257862679. The next prime is 328257862693. The reversal of 328257862690 is 96268752823.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 288765442161 + 39492420529 = 537369^2 + 198727^2 .

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

It is a super-2 number, since 2×328257862690² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (328257862693) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 16412893125 + ... + 16412893144.

Almost surely, 2^328257862690 is an apocalyptic number.

328257862690 is a deficient number, since it is larger than the sum of its proper divisors (262606290170).

328257862690 is a wasteful number, since it uses less digits than its factorization.

328257862690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32825786276.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 328257862690 in words is "three hundred twenty-eight billion, two hundred fifty-seven million, eight hundred sixty-two thousand, six hundred ninety".