128601770 has 32 divisors (see below), whose sum is σ = 267385536. Its totient is φ = 44012800.

The previous prime is 128601731. The next prime is 128601791. The reversal of 128601770 is 77106821.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32516 + ... + 36255.

It is an arithmetic number, because the mean of its divisors is an integer number (8355798).

Almost surely, 2^128601770 is an apocalyptic number.

128601770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128601770 is an abundant number, since it is smaller than the sum of its proper divisors (138783766).

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

128601770 is a wasteful number, since it uses less digits than its factorization.

128601770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68806.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 128601770 is about 11340.2720425923. The cubic root of 128601770 is about 504.7569591544.

The spelling of 128601770 in words is "one hundred twenty-eight million, six hundred one thousand, seven hundred seventy".