109802 has 32 divisors (see below), whose sum is σ = 221184. Its totient is φ = 39600.

The previous prime is 109793. The next prime is 109807. The reversal of 109802 is 208901.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (109807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3527 + ... + 3557.

It is an arithmetic number, because the mean of its divisors is an integer number (6912).

2¹⁰⁹⁸⁰² is an apocalyptic number.

109802 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

109802 is a wasteful number, since it uses less digits than its factorization.

109802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 109802 is about 331.3638483601. The cubic root of 109802 is about 47.8854327851.

Subtracting 109802 from its reverse (208901), we obtain a palindrome (99099).

The spelling of 109802 in words is "one hundred nine thousand, eight hundred two".