20043320 has 32 divisors (see below), whose sum is σ = 49198320. Its totient is φ = 7288320.

The previous prime is 20043311. The next prime is 20043337. The reversal of 20043320 is 2334002.

It is a junction number, because it is equal to n+sod(n) for n = 20043295 and 20043304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22337 + ... + 23216.

Almost surely, 2^20043320 is an apocalyptic number.

20043320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20043320 is an abundant number, since it is smaller than the sum of its proper divisors (29155000).

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

20043320 is a wasteful number, since it uses less digits than its factorization.

20043320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45575 (or 45571 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 20043320 is about 4476.9766584158. The cubic root of 20043320 is about 271.6376012832.

Adding to 20043320 its reverse (2334002), we get a palindrome (22377322).

The spelling of 20043320 in words is "twenty million, forty-three thousand, three hundred twenty".