201001728 has 36 divisors (see below), whose sum is σ = 534959768. Its totient is φ = 67000320.

The previous prime is 201001699. The next prime is 201001729. The reversal of 201001728 is 827100102.

It is not an unprimeable number, because it can be changed into a prime (201001729) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 130093 + ... + 131628.

Almost surely, 2^201001728 is an apocalyptic number.

It is an amenable number.

201001728 is an abundant number, since it is smaller than the sum of its proper divisors (333958040).

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

201001728 is an equidigital number, since it uses as much as digits as its factorization.

201001728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261740 (or 261726 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 201001728 is about 14177.5078204881. The cubic root of 201001728 is about 585.7782789036.

The spelling of 201001728 in words is "two hundred one million, one thousand, seven hundred twenty-eight".