20117300 has 72 divisors (see below), whose sum is σ = 51663360. Its totient is φ = 6652800.

The previous prime is 20117299. The next prime is 20117303. The reversal of 20117300 is 371102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20117303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19805 + ... + 20795.

Almost surely, 2^20117300 is an apocalyptic number.

20117300 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 20117300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25831680).

20117300 is an abundant number, since it is smaller than the sum of its proper divisors (31546060).

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

20117300 is a wasteful number, since it uses less digits than its factorization.

20117300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041 (or 1034 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 20117300 is about 4485.2313206790. The cubic root of 20117300 is about 271.9713962136.

Adding to 20117300 its reverse (371102), we get a palindrome (20488402).

The spelling of 20117300 in words is "twenty million, one hundred seventeen thousand, three hundred".