64347928 has 16 divisors (see below), whose sum is σ = 125898480. Its totient is φ = 30775008.

The previous prime is 64347923. The next prime is 64347953. The reversal of 64347928 is 82974346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64347923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174675 + ... + 175042.

It is an arithmetic number, because the mean of its divisors is an integer number (7868655).

Almost surely, 2^64347928 is an apocalyptic number.

It is an amenable number.

64347928 is a deficient number, since it is larger than the sum of its proper divisors (61550552).

64347928 is a wasteful number, since it uses less digits than its factorization.

64347928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349746 (or 349742 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 64347928 is about 8021.7160258887. The cubic root of 64347928 is about 400.7235404340.

The spelling of 64347928 in words is "sixty-four million, three hundred forty-seven thousand, nine hundred twenty-eight".