109204128 has 72 divisors (see below), whose sum is σ = 338790816. Its totient is φ = 33091200.

The previous prime is 109204127. The next prime is 109204159. The reversal of 109204128 is 821402901.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (109204127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14068 + ... + 20403.

It is an arithmetic number, because the mean of its divisors is an integer number (4705428).

Almost surely, 2^109204128 is an apocalyptic number.

109204128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

109204128 is an abundant number, since it is smaller than the sum of its proper divisors (229586688).

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

109204128 is a wasteful number, since it uses less digits than its factorization.

109204128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34498 (or 34487 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 109204128 is about 10450.0778944465. The cubic root of 109204128 is about 477.9836248424.

The spelling of 109204128 in words is "one hundred nine million, two hundred four thousand, one hundred twenty-eight".