20041320 has 128 divisors (see below), whose sum is σ = 67132800. Its totient is φ = 4752384.

The previous prime is 20041279. The next prime is 20041327. The reversal of 20041320 is 2314002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20041296 and 20041305.

It is not an unprimeable number, because it can be changed into a prime (20041327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45019 + ... + 45461.

It is an arithmetic number, because the mean of its divisors is an integer number (524475).

Almost surely, 2^20041320 is an apocalyptic number.

20041320 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 20041320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33566400).

20041320 is an abundant number, since it is smaller than the sum of its proper divisors (47091480).

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

20041320 is a wasteful number, since it uses less digits than its factorization.

20041320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 495 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20041320 is about 4476.7532878192. The cubic root of 20041320 is about 271.6285659658.

Adding to 20041320 its reverse (2314002), we get a palindrome (22355322).

The spelling of 20041320 in words is "twenty million, forty-one thousand, three hundred twenty".