64064428 has 24 divisors (see below), whose sum is σ = 118540800. Its totient is φ = 30210768.

The previous prime is 64064419. The next prime is 64064443. The reversal of 64064428 is 82446046.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64064393 and 64064402.

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, 16401 + ... + 19927.

It is an arithmetic number, because the mean of its divisors is an integer number (4939200).

Almost surely, 2^64064428 is an apocalyptic number.

It is an amenable number.

64064428 is a deficient number, since it is larger than the sum of its proper divisors (54476372).

64064428 is a wasteful number, since it uses less digits than its factorization.

64064428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3789 (or 3787 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 64064428 is about 8004.0257370901. The cubic root of 64064428 is about 400.1341799843.

The spelling of 64064428 in words is "sixty-four million, sixty-four thousand, four hundred twenty-eight".