203540080 has 40 divisors (see below), whose sum is σ = 483308352. Its totient is φ = 79682304.

The previous prime is 203540059. The next prime is 203540081. The reversal of 203540080 is 80045302.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203540081) 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 7 ways as a sum of consecutive naturals, for example, 23307 + ... + 30826.

Almost surely, 2^203540080 is an apocalyptic number.

203540080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203540080 is an abundant number, since it is smaller than the sum of its proper divisors (279768272).

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

203540080 is a wasteful number, since it uses less digits than its factorization.

203540080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54193 (or 54187 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 203540080 is about 14266.7473517968. The cubic root of 203540080 is about 588.2338064747.

Adding to 203540080 its reverse (80045302), we get a palindrome (283585382).

The spelling of 203540080 in words is "two hundred three million, five hundred forty thousand, eighty".