20041420 has 96 divisors (see below), whose sum is σ = 51020928. Its totient is φ = 6469632.

The previous prime is 20041403. The next prime is 20041423. The reversal of 20041420 is 2414002.

It is a self number, because there is not a number n which added to its sum of digits gives 20041420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20041423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274504 + ... + 274576.

It is an arithmetic number, because the mean of its divisors is an integer number (531468).

Almost surely, 2^20041420 is an apocalyptic number.

20041420 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 20041420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25510464).

20041420 is an abundant number, since it is smaller than the sum of its proper divisors (30979508).

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

20041420 is a wasteful number, since it uses less digits than its factorization.

20041420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 20041420 is about 4476.7644566137. The cubic root of 20041420 is about 271.6290177459.

Adding to 20041420 its reverse (2414002), we get a palindrome (22455422).

The spelling of 20041420 in words is "twenty million, forty-one thousand, four hundred twenty".