128188030 has 16 divisors (see below), whose sum is σ = 230997744. Its totient is φ = 51217600.

The previous prime is 128188009. The next prime is 128188063. The reversal of 128188030 is 30881821.

It is a junction number, because it is equal to n+sod(n) for n = 128187983 and 128188001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2805 + ... + 16255.

It is an arithmetic number, because the mean of its divisors is an integer number (14437359).

Almost surely, 2^128188030 is an apocalyptic number.

128188030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128188030 is a deficient number, since it is larger than the sum of its proper divisors (102809714).

128188030 is a wasteful number, since it uses less digits than its factorization.

128188030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14411.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 128188030 is about 11322.0152799756. The cubic root of 128188030 is about 504.2150731323.

The spelling of 128188030 in words is "one hundred twenty-eight million, one hundred eighty-eight thousand, thirty".