206109120 has 112 divisors (see below), whose sum is σ = 747906048. Its totient is φ = 47109120.

The previous prime is 206109109. The next prime is 206109121. The reversal of 206109120 is 21901602.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206109121) 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, 8616 + ... + 22055.

Almost surely, 2^206109120 is an apocalyptic number.

206109120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206109120 is an abundant number, since it is smaller than the sum of its proper divisors (541796928).

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

206109120 is a wasteful number, since it uses less digits than its factorization.

206109120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30698 (or 30688 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 206109120 is about 14356.5009664612. The cubic root of 206109120 is about 590.6983208994.

The spelling of 206109120 in words is "two hundred six million, one hundred nine thousand, one hundred twenty".