20123300 has 18 divisors (see below), whose sum is σ = 43667778. Its totient is φ = 8049280.

The previous prime is 20123293. The next prime is 20123339. The reversal of 20123300 is 332102.

It can be written as a sum of positive squares in 3 ways, for example, as 6270016 + 13853284 = 2504^2 + 3722^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100517 + ... + 100716.

Almost surely, 2^20123300 is an apocalyptic number.

20123300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123300 is an abundant number, since it is smaller than the sum of its proper divisors (23544478).

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

20123300 is a wasteful number, since it uses less digits than its factorization.

20123300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201247 (or 201240 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20123300 is about 4485.9001326378. The cubic root of 20123300 is about 271.9984320844.

Adding to 20123300 its reverse (332102), we get a palindrome (20455402).

The spelling of 20123300 in words is "twenty million, one hundred twenty-three thousand, three hundred".