128104758 has 48 divisors (see below), whose sum is σ = 298748736. Its totient is φ = 39525120.

The previous prime is 128104723. The next prime is 128104771. The reversal of 128104758 is 857401821.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15235 + ... + 22097.

It is an arithmetic number, because the mean of its divisors is an integer number (6223932).

Almost surely, 2^128104758 is an apocalyptic number.

128104758 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 128104758, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149374368).

128104758 is an abundant number, since it is smaller than the sum of its proper divisors (170643978).

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

128104758 is a wasteful number, since it uses less digits than its factorization.

128104758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6949 (or 6946 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 128104758 is about 11318.3372453731. The cubic root of 128104758 is about 504.1058687275.

The spelling of 128104758 in words is "one hundred twenty-eight million, one hundred four thousand, seven hundred fifty-eight".