272345 has 4 divisors (see below), whose sum is σ = 326820. Its totient is φ = 217872.

The previous prime is 272341. The next prime is 272347. The reversal of 272345 is 543272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 150544 + 121801 = 388^2 + 349^2 .

It is a cyclic number.

It is not a de Polignac number, because 272345 - 2² = 272341 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 7² + 3¹¹ + 2⁹ + 4⁷ + 5⁷ .

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

It is a self number, because there is not a number n which added to its sum of digits gives 272345.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27230 + ... + 27239.

It is an arithmetic number, because the mean of its divisors is an integer number (81705).

2²⁷²³⁴⁵ is an apocalyptic number.

It is an amenable number.

272345 is a deficient number, since it is larger than the sum of its proper divisors (54475).

272345 is an equidigital number, since it uses as much as digits as its factorization.

272345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54474.

The product of its digits is 1680, while the sum is 23.

The square root of 272345 is about 521.8668412536. The cubic root of 272345 is about 64.8196182280.

The spelling of 272345 in words is "two hundred seventy-two thousand, three hundred forty-five".