261348 has 24 divisors (see below), whose sum is σ = 631680. Its totient is φ = 84000.

The previous prime is 261347. The next prime is 261353. The reversal of 261348 is 843162.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (261347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28 + ... + 723.

It is an arithmetic number, because the mean of its divisors is an integer number (26320).

2²⁶¹³⁴⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 261348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315840).

261348 is an abundant number, since it is smaller than the sum of its proper divisors (370332).

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

261348 is a wasteful number, since it uses less digits than its factorization.

261348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 785 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 261348 is about 511.2220652515. Note that the first 3 decimals coincide. The cubic root of 261348 is about 63.9351556766.

The spelling of 261348 in words is "two hundred sixty-one thousand, three hundred forty-eight".