20053720 has 16 divisors (see below), whose sum is σ = 45120960. Its totient is φ = 8021472.

The previous prime is 20053717. The next prime is 20053763. The reversal of 20053720 is 2735002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250632 + ... + 250711.

It is an arithmetic number, because the mean of its divisors is an integer number (2820060).

Almost surely, 2^20053720 is an apocalyptic number.

20053720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20053720 is an abundant number, since it is smaller than the sum of its proper divisors (25067240).

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

20053720 is a wasteful number, since it uses less digits than its factorization.

20053720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501354 (or 501350 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 20053720 is about 4478.1380059127. The cubic root of 20053720 is about 271.6845752473.

Adding to 20053720 its reverse (2735002), we get a palindrome (22788722).

The spelling of 20053720 in words is "twenty million, fifty-three thousand, seven hundred twenty".