109642816 has 28 divisors (see below), whose sum is σ = 218559888. Its totient is φ = 54572672.

The previous prime is 109642811. The next prime is 109642829. The reversal of 109642816 is 618246901.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (109642811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10755 + ... + 18301.

Almost surely, 2^109642816 is an apocalyptic number.

109642816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

109642816 is a deficient number, since it is larger than the sum of its proper divisors (108917072).

109642816 is an equidigital number, since it uses as much as digits as its factorization.

109642816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7786 (or 7776 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 109642816 is about 10471.0465570544. The cubic root of 109642816 is about 478.6228116890.

The spelling of 109642816 in words is "one hundred nine million, six hundred forty-two thousand, eight hundred sixteen".