64278828 has 36 divisors (see below), whose sum is σ = 162810648. Its totient is φ = 21383040.

The previous prime is 64278793. The next prime is 64278871. The reversal of 64278828 is 82887246.

It is a happy number.

64278828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 19843 + ... + 22853.

It is an arithmetic number, because the mean of its divisors is an integer number (4522518).

Almost surely, 2^64278828 is an apocalyptic number.

It is an amenable number.

64278828 is an abundant number, since it is smaller than the sum of its proper divisors (98531820).

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

64278828 is a wasteful number, since it uses less digits than its factorization.

64278828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614 (or 3609 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 64278828 is about 8017.4078105083. The cubic root of 64278828 is about 400.5800501147.

The spelling of 64278828 in words is "sixty-four million, two hundred seventy-eight thousand, eight hundred twenty-eight".