109805000 has 40 divisors (see below), whose sum is σ = 257284830. Its totient is φ = 43920000.

The previous prime is 109804999. The next prime is 109805021. The reversal of 109805000 is 508901.

It can be written as a sum of positive squares in 5 ways, for example, as 7431076 + 102373924 = 2726^2 + 10118^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5981 + ... + 15980.

Almost surely, 2^109805000 is an apocalyptic number.

109805000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109805000 is an abundant number, since it is smaller than the sum of its proper divisors (147479830).

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

109805000 is an equidigital number, since it uses as much as digits as its factorization.

109805000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21987 (or 21968 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 109805000 is about 10478.7880978670. The cubic root of 109805000 is about 478.8586888824.

The spelling of 109805000 in words is "one hundred nine million, eight hundred five thousand".