405260 has 24 divisors (see below), whose sum is σ = 889056. Its totient is φ = 154880.

The previous prime is 405253. The next prime is 405269. The reversal of 405260 is 62504.

It is not an unprimeable number, because it can be changed into a prime (405269) by changing a digit.

405260 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20 + ... + 900.

It is an arithmetic number, because the mean of its divisors is an integer number (37044).

2⁴⁰⁵²⁶⁰ 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 405260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444528).

405260 is an abundant number, since it is smaller than the sum of its proper divisors (483796).

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

405260 is a wasteful number, since it uses less digits than its factorization.

405260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 911 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 405260 is about 636.6003455858. The cubic root of 405260 is about 74.0021913157.

Adding to 405260 its reverse (62504), we get a palindrome (467764).

The spelling of 405260 in words is "four hundred five thousand, two hundred sixty".