273921 has 16 divisors (see below), whose sum is σ = 399168. Its totient is φ = 166400.

The previous prime is 273919. The next prime is 273929. The reversal of 273921 is 129372.

It is a cyclic number.

It is not a de Polignac number, because 273921 - 2¹ = 273919 is a prime.

It is a plaindrome in base 9 and base 11.

It is a junction number, because it is equal to n+sod(n) for n = 273891 and 273900.

It is not an unprimeable number, because it can be changed into a prime (273929) 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, 2026 + ... + 2156.

It is an arithmetic number, because the mean of its divisors is an integer number (24948).

2²⁷³⁹²¹ is an apocalyptic number.

It is an amenable number.

273921 is a deficient number, since it is larger than the sum of its proper divisors (125247).

273921 is a wasteful number, since it uses less digits than its factorization.

273921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192.

The product of its digits is 756, while the sum is 24.

The square root of 273921 is about 523.3746268210. The cubic root of 273921 is about 64.9444100651.

The spelling of 273921 in words is "two hundred seventy-three thousand, nine hundred twenty-one".