201309928 has 16 divisors (see below), whose sum is σ = 377609760. Its totient is φ = 100614000.

The previous prime is 201309923. The next prime is 201309929. The reversal of 201309928 is 829903102.

201309928 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 2×201309928² = 81051374222730368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201309893 and 201309902.

It is not an unprimeable number, because it can be changed into a prime (201309923) 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, 29653 + ... + 35803.

It is an arithmetic number, because the mean of its divisors is an integer number (23600610).

Almost surely, 2^201309928 is an apocalyptic number.

It is an amenable number.

201309928 is a deficient number, since it is larger than the sum of its proper divisors (176299832).

201309928 is a wasteful number, since it uses less digits than its factorization.

201309928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10248 (or 10244 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 201309928 is about 14188.3729863575. The cubic root of 201309928 is about 586.0775212241.

The spelling of 201309928 in words is "two hundred one million, three hundred nine thousand, nine hundred twenty-eight".