434812872 has 128 divisors (see below), whose sum is σ = 1263024000. Its totient is φ = 123586560.

The previous prime is 434812871. The next prime is 434812897. The reversal of 434812872 is 278218434.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 434812872.

It is not an unprimeable number, because it can be changed into a prime (434812871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242154 + ... + 243942.

It is an arithmetic number, because the mean of its divisors is an integer number (9867375).

Almost surely, 2^434812872 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 434812872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631512000).

434812872 is an abundant number, since it is smaller than the sum of its proper divisors (828211128).

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

434812872 is a wasteful number, since it uses less digits than its factorization.

434812872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871 (or 1867 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 434812872 is about 20852.1670816249. The cubic root of 434812872 is about 757.5898208470.

The spelling of 434812872 in words is "four hundred thirty-four million, eight hundred twelve thousand, eight hundred seventy-two".