20420300 has 36 divisors (see below), whose sum is σ = 45517920. Its totient is φ = 7945920.

The previous prime is 20420293. The next prime is 20420303. The reversal of 20420300 is 302402.

It is not an unprimeable number, because it can be changed into a prime (20420303) 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, 941 + ... + 6459.

Almost surely, 2^20420300 is an apocalyptic number.

20420300 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 20420300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22758960).

20420300 is an abundant number, since it is smaller than the sum of its proper divisors (25097620).

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

20420300 is a wasteful number, since it uses less digits than its factorization.

20420300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5570 (or 5563 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 20420300 is about 4518.8826052466. The cubic root of 20420300 is about 273.3300449072.

Adding to 20420300 its reverse (302402), we get a palindrome (20722702).

The spelling of 20420300 in words is "twenty million, four hundred twenty thousand, three hundred".