128011456 has 28 divisors (see below), whose sum is σ = 259433568. Its totient is φ = 62642432.

The previous prime is 128011427. The next prime is 128011469. The reversal of 128011456 is 654110821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18271 + ... + 24286.

Almost surely, 2^128011456 is an apocalyptic number.

128011456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128011456 is an abundant number, since it is smaller than the sum of its proper divisors (131422112).

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

128011456 is an equidigital number, since it uses as much as digits as its factorization.

128011456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42616 (or 42606 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 128011456 is about 11314.2147761124. The cubic root of 128011456 is about 503.9834545673.

The spelling of 128011456 in words is "one hundred twenty-eight million, eleven thousand, four hundred fifty-six".