434538 has 32 divisors (see below), whose sum is σ = 1041600. Its totient is φ = 133488.

The previous prime is 434521. The next prime is 434561. The reversal of 434538 is 835434.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393 + ... + 1011.

It is an arithmetic number, because the mean of its divisors is an integer number (32550).

2⁴³⁴⁵³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 434538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520800).

434538 is an abundant number, since it is smaller than the sum of its proper divisors (607062).

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

434538 is a wasteful number, since it uses less digits than its factorization.

434538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 637 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 434538 is about 659.1949635730. The cubic root of 434538 is about 75.7430147465.

The spelling of 434538 in words is "four hundred thirty-four thousand, five hundred thirty-eight".