203000220 has 72 divisors (see below), whose sum is σ = 620539920. Its totient is φ = 53713920.

The previous prime is 203000209. The next prime is 203000227. The reversal of 203000220 is 22000302.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203000227) 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, 19276 + ... + 27884.

It is an arithmetic number, because the mean of its divisors is an integer number (8618610).

Almost surely, 2^203000220 is an apocalyptic number.

203000220 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 203000220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310269960).

203000220 is an abundant number, since it is smaller than the sum of its proper divisors (417539700).

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

203000220 is a wasteful number, since it uses less digits than its factorization.

203000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8755 (or 8750 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 203000220 is about 14247.8145692594. The cubic root of 203000220 is about 587.7132782311.

Adding to 203000220 its reverse (22000302), we get a palindrome (225000522).

The spelling of 203000220 in words is "two hundred three million, two hundred twenty", and thus it is an aban number.