328573646 has 4 divisors (see below), whose sum is σ = 492860472. Its totient is φ = 164286822.

The previous prime is 328573577. The next prime is 328573649. The reversal of 328573646 is 646375823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 646375823 = 31 ⋅20850833.

It is a junction number, because it is equal to n+sod(n) for n = 328573597 and 328573606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328573649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82143410 + ... + 82143413.

It is an arithmetic number, because the mean of its divisors is an integer number (123215118).

Almost surely, 2^328573646 is an apocalyptic number.

328573646 is a deficient number, since it is larger than the sum of its proper divisors (164286826).

328573646 is a wasteful number, since it uses less digits than its factorization.

328573646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164286825.

The product of its digits is 725760, while the sum is 44.

The square root of 328573646 is about 18126.6005086447. The cubic root of 328573646 is about 690.0452578310.

The spelling of 328573646 in words is "three hundred twenty-eight million, five hundred seventy-three thousand, six hundred forty-six".