203640988 has 12 divisors (see below), whose sum is σ = 371866320. Its totient is φ = 97393472.

The previous prime is 203640971. The next prime is 203641003. The reversal of 203640988 is 889046302.

203640988 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×203640988² = 82939303987232288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 203640988.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1106653 + ... + 1106836.

It is an arithmetic number, because the mean of its divisors is an integer number (30988860).

Almost surely, 2^203640988 is an apocalyptic number.

It is an amenable number.

203640988 is a deficient number, since it is larger than the sum of its proper divisors (168225332).

203640988 is a wasteful number, since it uses less digits than its factorization.

203640988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213516 (or 2213514 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 203640988 is about 14270.2833889170. The cubic root of 203640988 is about 588.3309989466.

The spelling of 203640988 in words is "two hundred three million, six hundred forty thousand, nine hundred eighty-eight".