434672128 has 80 divisors (see below), whose sum is σ = 957233376. Its totient is φ = 195543040.

The previous prime is 434672113. The next prime is 434672129. The reversal of 434672128 is 821276434.

It is not an unprimeable number, because it can be changed into a prime (434672129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636075 + ... + 636757.

Almost surely, 2^434672128 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 434672128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (478616688).

434672128 is an abundant number, since it is smaller than the sum of its proper divisors (522561248).

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

434672128 is a wasteful number, since it uses less digits than its factorization.

434672128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825 (or 809 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 434672128 is about 20848.7920033752. The cubic root of 434672128 is about 757.5080709455.

The spelling of 434672128 in words is "four hundred thirty-four million, six hundred seventy-two thousand, one hundred twenty-eight".