109128930 has 32 divisors (see below), whose sum is σ = 265823424. Its totient is φ = 28666176.

The previous prime is 109128889. The next prime is 109128931. The reversal of 109128930 is 39821901.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 109128891 and 109128900.

It is not an unprimeable number, because it can be changed into a prime (109128931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25137 + ... + 29156.

It is an arithmetic number, because the mean of its divisors is an integer number (8306982).

Almost surely, 2^109128930 is an apocalyptic number.

109128930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109128930 is an abundant number, since it is smaller than the sum of its proper divisors (156694494).

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

109128930 is a wasteful number, since it uses less digits than its factorization.

109128930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54370.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 109128930 is about 10446.4793112321. The cubic root of 109128930 is about 477.8738864206.

The spelling of 109128930 in words is "one hundred nine million, one hundred twenty-eight thousand, nine hundred thirty".