20023760 has 40 divisors (see below), whose sum is σ = 46801320. Its totient is φ = 7967232.

The previous prime is 20023753. The next prime is 20023763. The reversal of 20023760 is 6732002.

It can be written as a sum of positive squares in 4 ways, for example, as 12559936 + 7463824 = 3544^2 + 2732^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023763) 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, 17774 + ... + 18866.

It is an arithmetic number, because the mean of its divisors is an integer number (1170033).

Almost surely, 2^20023760 is an apocalyptic number.

20023760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20023760 is an abundant number, since it is smaller than the sum of its proper divisors (26777560).

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

20023760 is a wasteful number, since it uses less digits than its factorization.

20023760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335 (or 1329 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20023760 is about 4474.7916152599. The cubic root of 20023760 is about 271.5492100588.

Adding to 20023760 its reverse (6732002), we get a palindrome (26755762).

The spelling of 20023760 in words is "twenty million, twenty-three thousand, seven hundred sixty".