109156220 has 12 divisors (see below), whose sum is σ = 229228104. Its totient is φ = 43662480.

The previous prime is 109156211. The next prime is 109156241. The reversal of 109156220 is 22651901.

It is a self number, because there is not a number n which added to its sum of digits gives 109156220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2728886 + ... + 2728925.

It is an arithmetic number, because the mean of its divisors is an integer number (19102342).

Almost surely, 2^109156220 is an apocalyptic number.

109156220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109156220 is an abundant number, since it is smaller than the sum of its proper divisors (120071884).

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

109156220 is a wasteful number, since it uses less digits than its factorization.

109156220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5457820 (or 5457818 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 109156220 is about 10447.7854112726. The cubic root of 109156220 is about 477.9137172624.

The spelling of 109156220 in words is "one hundred nine million, one hundred fifty-six thousand, two hundred twenty".