203399928 has 48 divisors (see below), whose sum is σ = 568651200. Its totient is φ = 65612160.

The previous prime is 203399923. The next prime is 203399953. The reversal of 203399928 is 829993302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203399923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43333 + ... + 47796.

It is an arithmetic number, because the mean of its divisors is an integer number (11846900).

Almost surely, 2^203399928 is an apocalyptic number.

It is an amenable number.

203399928 is an abundant number, since it is smaller than the sum of its proper divisors (365251272).

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

203399928 is a wasteful number, since it uses less digits than its factorization.

203399928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91172 (or 91165 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 203399928 is about 14261.8346645865. The cubic root of 203399928 is about 588.0987616977.

The spelling of 203399928 in words is "two hundred three million, three hundred ninety-nine thousand, nine hundred twenty-eight".