493540 has 12 divisors (see below), whose sum is σ = 1036476. Its totient is φ = 197408.

The previous prime is 493531. The next prime is 493541. The reversal of 493540 is 45394.

It can be written as a sum of positive squares in 2 ways, for example, as 306916 + 186624 = 554^2 + 432^2 .

It is not an unprimeable number, because it can be changed into a prime (493541) 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 3 ways as a sum of consecutive naturals, for example, 12319 + ... + 12358.

It is an arithmetic number, because the mean of its divisors is an integer number (86373).

2⁴⁹³⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

493540 is an abundant number, since it is smaller than the sum of its proper divisors (542936).

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

493540 is a wasteful number, since it uses less digits than its factorization.

493540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24686 (or 24684 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 493540 is about 702.5240209416. The cubic root of 493540 is about 79.0267494739.

The spelling of 493540 in words is "four hundred ninety-three thousand, five hundred forty".