64513928 has 16 divisors (see below), whose sum is σ = 122496000. Its totient is φ = 31848336.

The previous prime is 64513921. The next prime is 64513979. The reversal of 64513928 is 82931546.

It is a happy number.

64513928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 64513891 and 64513900.

It is not an unprimeable number, because it can be changed into a prime (64513921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50408 + ... + 51671.

It is an arithmetic number, because the mean of its divisors is an integer number (7656000).

Almost surely, 2^64513928 is an apocalyptic number.

It is an amenable number.

64513928 is a deficient number, since it is larger than the sum of its proper divisors (57982072).

64513928 is a wasteful number, since it uses less digits than its factorization.

64513928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102164 (or 102160 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 64513928 is about 8032.0562747033. The cubic root of 64513928 is about 401.0678301436.

The spelling of 64513928 in words is "sixty-four million, five hundred thirteen thousand, nine hundred twenty-eight".