203995872 has 144 divisors (see below), whose sum is σ = 608969088. Its totient is φ = 64696320.

The previous prime is 203995871. The next prime is 203995931. The reversal of 203995872 is 278599302.

203995872 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×203995872² = 83228631586080768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203995871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 651588 + ... + 651900.

It is an arithmetic number, because the mean of its divisors is an integer number (4228952).

Almost surely, 2^203995872 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 203995872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304484544).

203995872 is an abundant number, since it is smaller than the sum of its proper divisors (404973216).

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

203995872 is a wasteful number, since it uses less digits than its factorization.

203995872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 203995872 is about 14282.7123474500. The cubic root of 203995872 is about 588.6725609806.

The spelling of 203995872 in words is "two hundred three million, nine hundred ninety-five thousand, eight hundred seventy-two".