261296 has 20 divisors (see below), whose sum is σ = 578832. Its totient is φ = 111936.

The previous prime is 261281. The next prime is 261301. The reversal of 261296 is 692162.

261296 is nontrivially palindromic in base 13.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055 + ... + 1278.

2²⁶¹²⁹⁶ is an apocalyptic number.

It is an amenable number.

261296 is an abundant number, since it is smaller than the sum of its proper divisors (317536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261296 is a wasteful number, since it uses less digits than its factorization.

261296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348 (or 2342 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

The square root of 261296 is about 511.1712041968. The cubic root of 261296 is about 63.9309150362.

The spelling of 261296 in words is "two hundred sixty-one thousand, two hundred ninety-six".