272785 has 8 divisors (see below), whose sum is σ = 331560. Its totient is φ = 215424.

The previous prime is 272777. The next prime is 272807. The reversal of 272785 is 587272.

It can be written as a sum of positive squares in 4 ways, for example, as 11664 + 261121 = 108^2 + 511^2 .

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 272785 - 2³ = 272777 is a prime.

It is a d-powerful number, because it can be written as 2⁴ + 7 + 7⁴ + 2¹³ + 8⁶ + 5² .

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139 + ... + 751.

It is an arithmetic number, because the mean of its divisors is an integer number (41445).

2²⁷²⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

272785 is a deficient number, since it is larger than the sum of its proper divisors (58775).

272785 is an equidigital number, since it uses as much as digits as its factorization.

272785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707.

The product of its digits is 7840, while the sum is 31.

The square root of 272785 is about 522.2882345985. The cubic root of 272785 is about 64.8545069250.

The spelling of 272785 in words is "two hundred seventy-two thousand, seven hundred eighty-five".