434040020 has 12 divisors (see below), whose sum is σ = 911484084. Its totient is φ = 173616000.

The previous prime is 434040011. The next prime is 434040023. The reversal of 434040020 is 20040434.

It can be written as a sum of positive squares in 2 ways, for example, as 84125584 + 349914436 = 9172^2 + 18706^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434040023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10850981 + ... + 10851020.

It is an arithmetic number, because the mean of its divisors is an integer number (75957007).

Almost surely, 2^434040020 is an apocalyptic number.

It is an amenable number.

434040020 is an abundant number, since it is smaller than the sum of its proper divisors (477444064).

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

434040020 is a wasteful number, since it uses less digits than its factorization.

434040020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21702010 (or 21702008 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 434040020 is about 20833.6271445949. The cubic root of 434040020 is about 757.1406988699.

Adding to 434040020 its reverse (20040434), we get a palindrome (454080454).

The spelling of 434040020 in words is "four hundred thirty-four million, forty thousand, twenty".