1728612273 has 8 divisors (see below), whose sum is σ = 2327636736. Its totient is φ = 1140998000.

The previous prime is 1728612271. The next prime is 1728612289. The reversal of 1728612273 is 3722168271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1728612273 - 2¹ = 1728612271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1728612271) 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, 2852193 + ... + 2852798.

It is an arithmetic number, because the mean of its divisors is an integer number (290954592).

Almost surely, 2^1728612273 is an apocalyptic number.

It is an amenable number.

1728612273 is a deficient number, since it is larger than the sum of its proper divisors (599024463).

1728612273 is a wasteful number, since it uses less digits than its factorization.

1728612273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5705095.

The product of its digits is 56448, while the sum is 39.

The square root of 1728612273 is about 41576.5832290245. The cubic root of 1728612273 is about 1200.1417131249.

The spelling of 1728612273 in words is "one billion, seven hundred twenty-eight million, six hundred twelve thousand, two hundred seventy-three".