434439828 has 144 divisors (see below), whose sum is σ = 1237824000. Its totient is φ = 131604480.

The previous prime is 434439827. The next prime is 434439839. The reversal of 434439828 is 828934434.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434439821) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 967348 + ... + 967796.

It is an arithmetic number, because the mean of its divisors is an integer number (8596000).

Almost surely, 2^434439828 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 434439828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618912000).

434439828 is an abundant number, since it is smaller than the sum of its proper divisors (803384172).

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

434439828 is a wasteful number, since it uses less digits than its factorization.

434439828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 502 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 434439828 is about 20843.2201926670. The cubic root of 434439828 is about 757.3731029468.

The spelling of 434439828 in words is "four hundred thirty-four million, four hundred thirty-nine thousand, eight hundred twenty-eight".