20300500 has 48 divisors (see below), whose sum is σ = 48379968. Its totient is φ = 7380000.

The previous prime is 20300491. The next prime is 20300507. The reversal of 20300500 is 500302.

It is a super-2 number, since 2×20300500² = 824220600500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3655 + ... + 7345.

It is an arithmetic number, because the mean of its divisors is an integer number (1007916).

Almost surely, 2^20300500 is an apocalyptic number.

20300500 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 20300500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24189984).

20300500 is an abundant number, since it is smaller than the sum of its proper divisors (28079468).

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

20300500 is a wasteful number, since it uses less digits than its factorization.

20300500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721 (or 3709 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 10.

The square root of 20300500 is about 4505.6076171811. The cubic root of 20300500 is about 272.7944800699.

Adding to 20300500 its reverse (500302), we get a palindrome (20800802).

The spelling of 20300500 in words is "twenty million, three hundred thousand, five hundred".