434431220 has 24 divisors (see below), whose sum is σ = 912766344. Its totient is φ = 173684736.

The previous prime is 434431201. The next prime is 434431253. The reversal of 434431220 is 22134434.

It can be written as a sum of positive squares in 4 ways, for example, as 13278736 + 421152484 = 3644^2 + 20522^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47672 + ... + 56048.

It is an arithmetic number, because the mean of its divisors is an integer number (38031931).

Almost surely, 2^434431220 is an apocalyptic number.

It is an amenable number.

434431220 is an abundant number, since it is smaller than the sum of its proper divisors (478335124).

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

434431220 is a wasteful number, since it uses less digits than its factorization.

434431220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10979 (or 10977 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 434431220 is about 20843.0136976398. The cubic root of 434431220 is about 757.3681007115.

Adding to 434431220 its reverse (22134434), we get a palindrome (456565654).

The spelling of 434431220 in words is "four hundred thirty-four million, four hundred thirty-one thousand, two hundred twenty".