64000128 has 32 divisors (see below), whose sum is σ = 170001360. Its totient is φ = 21333248.

The previous prime is 64000127. The next prime is 64000147. The reversal of 64000128 is 82100046.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (64000127) 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, 82950 + ... + 83717.

Almost surely, 2^64000128 is an apocalyptic number.

It is an amenable number.

64000128 is an abundant number, since it is smaller than the sum of its proper divisors (106001232).

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

64000128 is a wasteful number, since it uses less digits than its factorization.

64000128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166684 (or 166672 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 64000128 is about 8000.0079999960. The cubic root of 64000128 is about 400.0002666665. Note that the first 3 decimals are identical.

The spelling of 64000128 in words is "sixty-four million, one hundred twenty-eight", and thus it is an aban number.