434540 has 12 divisors (see below), whose sum is σ = 912576. Its totient is φ = 173808.

The previous prime is 434521. The next prime is 434561. The reversal of 434540 is 45434.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 21727 = 434540 / (4 + 3 + 4 + 5 + 4 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10844 + ... + 10883.

It is an arithmetic number, because the mean of its divisors is an integer number (76048).

2⁴³⁴⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

434540 is an abundant number, since it is smaller than the sum of its proper divisors (478036).

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

434540 is a wasteful number, since it uses less digits than its factorization.

434540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21736 (or 21734 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 434540 is about 659.1964805731. The cubic root of 434540 is about 75.7431309510.

Adding to 434540 its reverse (45434), we get a palindrome (479974).

The spelling of 434540 in words is "four hundred thirty-four thousand, five hundred forty".