328804932457 has 4 divisors (see below), whose sum is σ = 328819201236. Its totient is φ = 328790663680.

The previous prime is 328804932433. The next prime is 328804932479. The reversal of 328804932457 is 754239408823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 754239408823 = 241 ⋅3129624103.

It can be written as a sum of positive squares in 2 ways, for example, as 232964536896 + 95840395561 = 482664^2 + 309581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328804932457 is a prime.

It is a super-2 number, since 2×328804932457² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328804932398 and 328804932407.

It is not an unprimeable number, because it can be changed into a prime (328804992457) 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, 7099768 + ... + 7145929.

It is an arithmetic number, because the mean of its divisors is an integer number (82204800309).

Almost surely, 2^328804932457 is an apocalyptic number.

It is an amenable number.

328804932457 is a deficient number, since it is larger than the sum of its proper divisors (14268779).

328804932457 is a wasteful number, since it uses less digits than its factorization.

328804932457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14268778.

The product of its (nonzero) digits is 11612160, while the sum is 55.

The spelling of 328804932457 in words is "three hundred twenty-eight billion, eight hundred four million, nine hundred thirty-two thousand, four hundred fifty-seven".