1728847628 has 24 divisors (see below), whose sum is σ = 3037984320. Its totient is φ = 860861520.

The previous prime is 1728847621. The next prime is 1728847643. The reversal of 1728847628 is 8267488271.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1728847628.

It is not an unprimeable number, because it can be changed into a prime (1728847621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1696103 + ... + 1697121.

It is an arithmetic number, because the mean of its divisors is an integer number (126582680).

Almost surely, 2^1728847628 is an apocalyptic number.

It is an amenable number.

1728847628 is a deficient number, since it is larger than the sum of its proper divisors (1309136692).

1728847628 is a wasteful number, since it uses less digits than its factorization.

1728847628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357 (or 2355 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 53.

The square root of 1728847628 is about 41579.4135119773. The cubic root of 1728847628 is about 1200.1961781119.

The spelling of 1728847628 in words is "one billion, seven hundred twenty-eight million, eight hundred forty-seven thousand, six hundred twenty-eight".