203240052 has 72 divisors (see below), whose sum is σ = 538312320. Its totient is φ = 64532160.

The previous prime is 203240047. The next prime is 203240069. The reversal of 203240052 is 250042302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 321777 + ... + 322407.

It is an arithmetic number, because the mean of its divisors is an integer number (7476560).

Almost surely, 2^203240052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203240052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269156160).

203240052 is an abundant number, since it is smaller than the sum of its proper divisors (335072268).

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

203240052 is a wasteful number, since it uses less digits than its factorization.

203240052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1048 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 203240052 is about 14256.2285335218. The cubic root of 203240052 is about 587.9446359090.

Adding to 203240052 its reverse (250042302), we get a palindrome (453282354).

The spelling of 203240052 in words is "two hundred three million, two hundred forty thousand, fifty-two".