128113530 has 32 divisors (see below), whose sum is σ = 325560384. Its totient is φ = 32153856.

The previous prime is 128113529. The next prime is 128113543. The reversal of 128113530 is 35311821.

It is a self number, because there is not a number n which added to its sum of digits gives 128113530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125092 + ... + 126111.

It is an arithmetic number, because the mean of its divisors is an integer number (10173762).

Almost surely, 2^128113530 is an apocalyptic number.

128113530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128113530 is an abundant number, since it is smaller than the sum of its proper divisors (197446854).

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

128113530 is a wasteful number, since it uses less digits than its factorization.

128113530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251230.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 128113530 is about 11318.7247514903. The cubic root of 128113530 is about 504.1173747163.

The spelling of 128113530 in words is "one hundred twenty-eight million, one hundred thirteen thousand, five hundred thirty".