201839928 has 64 divisors (see below), whose sum is σ = 513276960. Its totient is φ = 66134016.

The previous prime is 201839917. The next prime is 201839947. The reversal of 201839928 is 829938102.

It is a self number, because there is not a number n which added to its sum of digits gives 201839928.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 644700 + ... + 645012.

Almost surely, 2^201839928 is an apocalyptic number.

It is an amenable number.

201839928 is an abundant number, since it is smaller than the sum of its proper divisors (311437032).

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

201839928 is a wasteful number, since it uses less digits than its factorization.

201839928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 201839928 is about 14207.0379741873. The cubic root of 201839928 is about 586.5914036255.

The spelling of 201839928 in words is "two hundred one million, eight hundred thirty-nine thousand, nine hundred twenty-eight".