261282 has 16 divisors (see below), whose sum is σ = 597312. Its totient is φ = 74640.

The previous prime is 261281. The next prime is 261301. The reversal of 261282 is 282162.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (261281) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3069 + ... + 3152.

It is an arithmetic number, because the mean of its divisors is an integer number (37332).

2²⁶¹²⁸² is an apocalyptic number.

261282 is an abundant number, since it is smaller than the sum of its proper divisors (336030).

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

261282 is a wasteful number, since it uses less digits than its factorization.

261282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6233.

The product of its digits is 384, while the sum is 21.

The square root of 261282 is about 511.1575099712. The cubic root of 261282 is about 63.9297732292.

The spelling of 261282 in words is "two hundred sixty-one thousand, two hundred eighty-two".