272405 has 16 divisors (see below), whose sum is σ = 384384. Its totient is φ = 181440.

The previous prime is 272399. The next prime is 272407. The reversal of 272405 is 504272.

It is not a de Polignac number, because 272405 - 2⁶ = 272341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1415 + ... + 1595.

It is an arithmetic number, because the mean of its divisors is an integer number (24024).

2²⁷²⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

272405 is a deficient number, since it is larger than the sum of its proper divisors (111979).

272405 is a wasteful number, since it uses less digits than its factorization.

272405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 272405 is about 521.9243240164. The cubic root of 272405 is about 64.8243779893.

Adding to 272405 its reverse (504272), we get a palindrome (776677).

The spelling of 272405 in words is "two hundred seventy-two thousand, four hundred five".