128775130 has 16 divisors (see below), whose sum is σ = 252867744. Its totient is φ = 46827280.

The previous prime is 128775121. The next prime is 128775131. The reversal of 128775130 is 31577821.

It is not an unprimeable number, because it can be changed into a prime (128775131) 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, 585232 + ... + 585451.

It is an arithmetic number, because the mean of its divisors is an integer number (15804234).

Almost surely, 2^128775130 is an apocalyptic number.

128775130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128775130 is a deficient number, since it is larger than the sum of its proper divisors (124092614).

128775130 is a wasteful number, since it uses less digits than its factorization.

128775130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170701.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 128775130 is about 11347.9130239882. The cubic root of 128775130 is about 504.9836677396.

The spelling of 128775130 in words is "one hundred twenty-eight million, seven hundred seventy-five thousand, one hundred thirty".