64520328 has 32 divisors (see below), whose sum is σ = 161784000. Its totient is φ = 21442368.

The previous prime is 64520317. The next prime is 64520353. The reversal of 64520328 is 82302546.

It is a junction number, because it is equal to n+sod(n) for n = 64520295 and 64520304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4525 + ... + 12227.

It is an arithmetic number, because the mean of its divisors is an integer number (5055750).

Almost surely, 2^64520328 is an apocalyptic number.

It is an amenable number.

64520328 is an abundant number, since it is smaller than the sum of its proper divisors (97263672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64520328 is a wasteful number, since it uses less digits than its factorization.

64520328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8061 (or 8057 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 64520328 is about 8032.4546684062. The cubic root of 64520328 is about 401.0810921338.

The spelling of 64520328 in words is "sixty-four million, five hundred twenty thousand, three hundred twenty-eight".