83203540 has 24 divisors (see below), whose sum is σ = 199688832. Its totient is φ = 28526880.

The previous prime is 83203517. The next prime is 83203577. The reversal of 83203540 is 4530238.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297016 + ... + 297295.

It is an arithmetic number, because the mean of its divisors is an integer number (8320368).

Almost surely, 2^83203540 is an apocalyptic number.

It is an amenable number.

83203540 is an abundant number, since it is smaller than the sum of its proper divisors (116485292).

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

83203540 is a wasteful number, since it uses less digits than its factorization.

83203540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594327 (or 594325 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 83203540 is about 9121.5974478158. The cubic root of 83203540 is about 436.5633446924.

Adding to 83203540 its reverse (4530238), we get a palindrome (87733778).

The spelling of 83203540 in words is "eighty-three million, two hundred three thousand, five hundred forty".