203204240 has 80 divisors (see below), whose sum is σ = 509044800. Its totient is φ = 75188736.

The previous prime is 203204227. The next prime is 203204249. The reversal of 203204240 is 42402302.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (203204249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63806 + ... + 66914.

It is an arithmetic number, because the mean of its divisors is an integer number (6363060).

Almost surely, 2^203204240 is an apocalyptic number.

203204240 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 203204240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254522400).

203204240 is an abundant number, since it is smaller than the sum of its proper divisors (305840560).

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

203204240 is a wasteful number, since it uses less digits than its factorization.

203204240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184 (or 3178 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 203204240 is about 14254.9724657749. The cubic root of 203204240 is about 587.9101008688.

Adding to 203204240 its reverse (42402302), we get a palindrome (245606542).

The spelling of 203204240 in words is "two hundred three million, two hundred four thousand, two hundred forty".