203442220 has 24 divisors (see below), whose sum is σ = 427798224. Its totient is φ = 81268416.

The previous prime is 203442209. The next prime is 203442223. The reversal of 203442220 is 22244302.

It is not an unprimeable number, because it can be changed into a prime (203442223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9559 + ... + 22321.

It is an arithmetic number, because the mean of its divisors is an integer number (17824926).

Almost surely, 2^203442220 is an apocalyptic number.

203442220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203442220 is an abundant number, since it is smaller than the sum of its proper divisors (224356004).

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

203442220 is a wasteful number, since it uses less digits than its factorization.

203442220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13569 (or 13567 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 203442220 is about 14263.3172859612. The cubic root of 203442220 is about 588.1395190854.

Adding to 203442220 its reverse (22244302), we get a palindrome (225686522).

The spelling of 203442220 in words is "two hundred three million, four hundred forty-two thousand, two hundred twenty".