1728473747 has 48 divisors (see below), whose sum is σ = 2419408320. Its totient is φ = 1200165120.

The previous prime is 1728473711. The next prime is 1728473753. The reversal of 1728473747 is 7473748271.

It is not a de Polignac number, because 1728473747 - 2¹² = 1728469651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1728473695 and 1728473704.

It is not an unprimeable number, because it can be changed into a prime (1728473347) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 316613 + ... + 322025.

It is an arithmetic number, because the mean of its divisors is an integer number (50404340).

Almost surely, 2^1728473747 is an apocalyptic number.

1728473747 is a deficient number, since it is larger than the sum of its proper divisors (690934573).

1728473747 is a wasteful number, since it uses less digits than its factorization.

1728473747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5484 (or 5473 counting only the distinct ones).

The product of its digits is 1843968, while the sum is 50.

The square root of 1728473747 is about 41574.9172819382. The cubic root of 1728473747 is about 1200.1096536372.

The spelling of 1728473747 in words is "one billion, seven hundred twenty-eight million, four hundred seventy-three thousand, seven hundred forty-seven".