20243120 has 40 divisors (see below), whose sum is σ = 47434464. Its totient is φ = 8033792.

The previous prime is 20243117. The next prime is 20243137. The reversal of 20243120 is 2134202.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 20243095 and 20243104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10037 + ... + 11883.

Almost surely, 2^20243120 is an apocalyptic number.

20243120 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 20243120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23717232).

20243120 is an abundant number, since it is smaller than the sum of its proper divisors (27191344).

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

20243120 is a wasteful number, since it uses less digits than its factorization.

20243120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997 (or 1991 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20243120 is about 4499.2354906139. The cubic root of 20243120 is about 272.5372168118.

Adding to 20243120 its reverse (2134202), we get a palindrome (22377322).

The spelling of 20243120 in words is "twenty million, two hundred forty-three thousand, one hundred twenty".