128455258 has 8 divisors (see below), whose sum is σ = 198898560. Its totient is φ = 62155740.

The previous prime is 128455241. The next prime is 128455267. The reversal of 128455258 is 852554821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 128455258.

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, 1035868 + ... + 1035991.

It is an arithmetic number, because the mean of its divisors is an integer number (24862320).

Almost surely, 2^128455258 is an apocalyptic number.

128455258 is a deficient number, since it is larger than the sum of its proper divisors (70443302).

128455258 is a wasteful number, since it uses less digits than its factorization.

128455258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071892.

The product of its digits is 128000, while the sum is 40.

The square root of 128455258 is about 11333.8103919203. The cubic root of 128455258 is about 504.5652016758.

The spelling of 128455258 in words is "one hundred twenty-eight million, four hundred fifty-five thousand, two hundred fifty-eight".