109920428 has 12 divisors (see below), whose sum is σ = 192649632. Its totient is φ = 54877680.

The previous prime is 109920403. The next prime is 109920431. The reversal of 109920428 is 824029901.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17588 + ... + 23003.

It is an arithmetic number, because the mean of its divisors is an integer number (16054136).

Almost surely, 2^109920428 is an apocalyptic number.

It is an amenable number.

109920428 is a deficient number, since it is larger than the sum of its proper divisors (82729204).

109920428 is a wasteful number, since it uses less digits than its factorization.

109920428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41272 (or 41270 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 109920428 is about 10484.2943491682. The cubic root of 109920428 is about 479.0264236364.

The spelling of 109920428 in words is "one hundred nine million, nine hundred twenty thousand, four hundred twenty-eight".