273406 has 16 divisors (see below), whose sum is σ = 478080. Its totient is φ = 114840.

The previous prime is 273367. The next prime is 273433. The reversal of 273406 is 604372.

It is a plaindrome in base 12.

It is a nialpdrome in base 5.

It is a congruent number.

It is an unprimeable number.

273406 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661 + ... + 991.

It is an arithmetic number, because the mean of its divisors is an integer number (29880).

2²⁷³⁴⁰⁶ is an apocalyptic number.

273406 is the 331-st heptagonal number.

273406 is a deficient number, since it is larger than the sum of its proper divisors (204674).

273406 is a wasteful number, since it uses less digits than its factorization.

273406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 273406 is about 522.8823959553. The cubic root of 273406 is about 64.9036837803.

Adding to 273406 its reverse (604372), we get a palindrome (877778).

The spelling of 273406 in words is "two hundred seventy-three thousand, four hundred six".