905340 has 48 divisors (see below), whose sum is σ = 2580480. Its totient is φ = 237120.

The previous prime is 905339. The next prime is 905347. The reversal of 905340 is 43509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905347) 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 15 ways as a sum of consecutive naturals, for example, 4645 + ... + 4835.

It is an arithmetic number, because the mean of its divisors is an integer number (53760).

2⁹⁰⁵³⁴⁰ 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 905340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1290240).

905340 is an abundant number, since it is smaller than the sum of its proper divisors (1675140).

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

905340 is a wasteful number, since it uses less digits than its factorization.

905340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 905340 is about 951.4935627738. The cubic root of 905340 is about 96.7395143842.

Adding to 905340 its reverse (43509), we get a palindrome (948849).

The spelling of 905340 in words is "nine hundred five thousand, three hundred forty".