128860270 has 64 divisors (see below), whose sum is σ = 297063936. Its totient is φ = 39070080.

The previous prime is 128860267. The next prime is 128860301. The reversal of 128860270 is 72068821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26229 + ... + 30751.

It is an arithmetic number, because the mean of its divisors is an integer number (4641624).

Almost surely, 2^128860270 is an apocalyptic number.

128860270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128860270 is an abundant number, since it is smaller than the sum of its proper divisors (168203666).

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

128860270 is a wasteful number, since it uses less digits than its factorization.

128860270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4585.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 128860270 is about 11351.6637547101. The cubic root of 128860270 is about 505.0949336279.

The spelling of 128860270 in words is "one hundred twenty-eight million, eight hundred sixty thousand, two hundred seventy".