434424340 has 48 divisors (see below), whose sum is σ = 1049069952. Its totient is φ = 148023936.

The previous prime is 434424323. The next prime is 434424373. The reversal of 434424340 is 43424434.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 434424299 and 434424308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13302 + ... + 32338.

It is an arithmetic number, because the mean of its divisors is an integer number (21855624).

Almost surely, 2^434424340 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 434424340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524534976).

434424340 is an abundant number, since it is smaller than the sum of its proper divisors (614645612).

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

434424340 is a wasteful number, since it uses less digits than its factorization.

434424340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19216 (or 19214 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

The square root of 434424340 is about 20842.8486536750. The cubic root of 434424340 is about 757.3641025949.

Adding to 434424340 its reverse (43424434), we get a palindrome (477848774).

The spelling of 434424340 in words is "four hundred thirty-four million, four hundred twenty-four thousand, three hundred forty".