203216648 has 16 divisors (see below), whose sum is σ = 383008380. Its totient is φ = 101081088.

The previous prime is 203216641. The next prime is 203216683. The reversal of 203216648 is 846612302.

It can be written as a sum of positive squares in 2 ways, for example, as 198190084 + 5026564 = 14078^2 + 2242^2 .

It is not an unprimeable number, because it can be changed into a prime (203216641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64265 + ... + 67352.

Almost surely, 2^203216648 is an apocalyptic number.

It is an amenable number.

203216648 is a deficient number, since it is larger than the sum of its proper divisors (179791732).

203216648 is a wasteful number, since it uses less digits than its factorization.

203216648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131816 (or 131812 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 203216648 is about 14255.4076756857. The cubic root of 203216648 is about 587.9220668922.

The spelling of 203216648 in words is "two hundred three million, two hundred sixteen thousand, six hundred forty-eight".