128601258 has 16 divisors (see below), whose sum is σ = 258206400. Its totient is φ = 42699776.

The previous prime is 128601251. The next prime is 128601289. The reversal of 128601258 is 852106821.

It is not an unprimeable number, because it can be changed into a prime (128601251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40158 + ... + 43241.

It is an arithmetic number, because the mean of its divisors is an integer number (16137900).

Almost surely, 2^128601258 is an apocalyptic number.

128601258 is an abundant number, since it is smaller than the sum of its proper divisors (129605142).

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

128601258 is a wasteful number, since it uses less digits than its factorization.

128601258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83661.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 128601258 is about 11340.2494681555. The cubic root of 128601258 is about 504.7562892935.

The spelling of 128601258 in words is "one hundred twenty-eight million, six hundred one thousand, two hundred fifty-eight".