201288728 has 8 divisors (see below), whose sum is σ = 377416380. Its totient is φ = 100644360.

The previous prime is 201288727. The next prime is 201288749. The reversal of 201288728 is 827882102.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 201288691 and 201288700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201288727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12580538 + ... + 12580553.

Almost surely, 2^201288728 is an apocalyptic number.

It is an amenable number.

201288728 is a deficient number, since it is larger than the sum of its proper divisors (176127652).

201288728 is a wasteful number, since it uses less digits than its factorization.

201288728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25161097 (or 25161093 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 201288728 is about 14187.6258760936. The cubic root of 201288728 is about 586.0569471773.

The spelling of 201288728 in words is "two hundred one million, two hundred eighty-eight thousand, seven hundred twenty-eight".