128063680 has 28 divisors (see below), whose sum is σ = 304952400. Its totient is φ = 51225344.

The previous prime is 128063671. The next prime is 128063723. The reversal of 128063680 is 86360821.

It is a super-2 number, since 2×128063680² = 32800612270284800, 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, 199780 + ... + 200419.

Almost surely, 2^128063680 is an apocalyptic number.

128063680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128063680 is an abundant number, since it is smaller than the sum of its proper divisors (176888720).

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

128063680 is an equidigital number, since it uses as much as digits as its factorization.

128063680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400216 (or 400206 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 128063680 is about 11316.5224340342. The cubic root of 128063680 is about 504.0519808653.

The spelling of 128063680 in words is "one hundred twenty-eight million, sixty-three thousand, six hundred eighty".