20213300 has 36 divisors (see below), whose sum is σ = 44226336. Its totient is φ = 8018400.

The previous prime is 20213293. The next prime is 20213309. The reversal of 20213300 is 331202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12329 + ... + 13871.

Almost surely, 2^20213300 is an apocalyptic number.

20213300 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 20213300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22113168).

20213300 is an abundant number, since it is smaller than the sum of its proper divisors (24013036).

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

20213300 is a wasteful number, since it uses less digits than its factorization.

20213300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688 (or 1681 counting only the distinct ones).

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

The square root of 20213300 is about 4495.9203729604. The cubic root of 20213300 is about 272.4033268167.

Adding to 20213300 its reverse (331202), we get a palindrome (20544502).

The spelling of 20213300 in words is "twenty million, two hundred thirteen thousand, three hundred".