261882 has 12 divisors (see below), whose sum is σ = 567450. Its totient is φ = 87288.

The previous prime is 261881. The next prime is 261887. The reversal of 261882 is 288162.

It can be written as a sum of positive squares in only one way, i.e., 184041 + 77841 = 429^2 + 279^2 .

It is not an unprimeable number, because it can be changed into a prime (261881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7257 + ... + 7292.

261882 is a Friedman number, since it can be written as 2^18-6-2^8, using all its digits and the basic arithmetic operations.

2²⁶¹⁸⁸² is an apocalyptic number.

261882 is an abundant number, since it is smaller than the sum of its proper divisors (305568).

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

261882 is a wasteful number, since it uses less digits than its factorization.

261882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14557 (or 14554 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 261882 is about 511.7440766633. The cubic root of 261882 is about 63.9786712782.

The spelling of 261882 in words is "two hundred sixty-one thousand, eight hundred eighty-two".