43434920 has 16 divisors (see below), whose sum is σ = 97728660. Its totient is φ = 17373952.

The previous prime is 43434917. The next prime is 43434947. The reversal of 43434920 is 2943434.

It can be written as a sum of positive squares in 2 ways, for example, as 43270084 + 164836 = 6578^2 + 406^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542897 + ... + 542976.

Almost surely, 2^43434920 is an apocalyptic number.

43434920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43434920 is an abundant number, since it is smaller than the sum of its proper divisors (54293740).

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

43434920 is a wasteful number, since it uses less digits than its factorization.

43434920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085884 (or 1085880 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 43434920 is about 6590.5174303692. The cubic root of 43434920 is about 351.5170071636.

The spelling of 43434920 in words is "forty-three million, four hundred thirty-four thousand, nine hundred twenty".