201728547 has 12 divisors (see below), whose sum is σ = 296884224. Its totient is φ = 131947920.

The previous prime is 201728543. The next prime is 201728573. The reversal of 201728547 is 745827102.

It is not a de Polignac number, because 201728547 - 2² = 201728543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201728543) 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, 210979 + ... + 211932.

It is an arithmetic number, because the mean of its divisors is an integer number (24740352).

Almost surely, 2^201728547 is an apocalyptic number.

201728547 is a deficient number, since it is larger than the sum of its proper divisors (95155677).

201728547 is a wasteful number, since it uses less digits than its factorization.

201728547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422970 (or 422967 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 201728547 is about 14203.1175098990. The cubic root of 201728547 is about 586.4834845113.

The spelling of 201728547 in words is "two hundred one million, seven hundred twenty-eight thousand, five hundred forty-seven".