20969120 has 48 divisors (see below), whose sum is σ = 50168160. Its totient is φ = 8281344.

The previous prime is 20969119. The next prime is 20969129. The reversal of 20969120 is 2196902.

It is not an unprimeable number, because it can be changed into a prime (20969129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12491 + ... + 14069.

It is an arithmetic number, because the mean of its divisors is an integer number (1045170).

Almost surely, 2^20969120 is an apocalyptic number.

20969120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20969120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25084080).

20969120 is an abundant number, since it is smaller than the sum of its proper divisors (29199040).

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

20969120 is a wasteful number, since it uses less digits than its factorization.

20969120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677 (or 1669 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 20969120 is about 4579.2051712060. The cubic root of 20969120 is about 275.7571202221.

The spelling of 20969120 in words is "twenty million, nine hundred sixty-nine thousand, one hundred twenty".