109812885 has 32 divisors (see below), whose sum is σ = 216249600. Its totient is φ = 46338048.

The previous prime is 109812863. The next prime is 109812887. The reversal of 109812885 is 588218901.

It is not a de Polignac number, because 109812885 - 2¹³ = 109804693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109812887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38860 + ... + 41589.

It is an arithmetic number, because the mean of its divisors is an integer number (6757800).

Almost surely, 2^109812885 is an apocalyptic number.

109812885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109812885 is a deficient number, since it is larger than the sum of its proper divisors (106436715).

109812885 is a wasteful number, since it uses less digits than its factorization.

109812885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80477.

The product of its (nonzero) digits is 46080, while the sum is 42.

The square root of 109812885 is about 10479.1643273689. The cubic root of 109812885 is about 478.8701507478.

The spelling of 109812885 in words is "one hundred nine million, eight hundred twelve thousand, eight hundred eighty-five".