128144064 has 28 divisors (see below), whose sum is σ = 339048344. Its totient is φ = 42714624.

The previous prime is 128144059. The next prime is 128144099. The reversal of 128144064 is 460441821.

It is a super-2 number, since 2×128144064² = 32841802276872192, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333517 + ... + 333900.

Almost surely, 2^128144064 is an apocalyptic number.

It is an amenable number.

128144064 is an abundant number, since it is smaller than the sum of its proper divisors (210904280).

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

128144064 is an equidigital number, since it uses as much as digits as its factorization.

128144064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667432 (or 667422 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 128144064 is about 11320.0734979946. The cubic root of 128144064 is about 504.1574212209.

Adding to 128144064 its reverse (460441821), we get a palindrome (588585885).

The spelling of 128144064 in words is "one hundred twenty-eight million, one hundred forty-four thousand, sixty-four".