43668420 has 24 divisors (see below), whose sum is σ = 122271744. Its totient is φ = 11644896.

The previous prime is 43668419. The next prime is 43668431. The reversal of 43668420 is 2486634.

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, 363844 + ... + 363963.

It is an arithmetic number, because the mean of its divisors is an integer number (5094656).

Almost surely, 2^43668420 is an apocalyptic number.

It is an amenable number.

43668420 is an abundant number, since it is smaller than the sum of its proper divisors (78603324).

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

43668420 is a wasteful number, since it uses less digits than its factorization.

43668420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727819 (or 727817 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 43668420 is about 6608.2085318186. The cubic root of 43668420 is about 352.1457837085.

The spelling of 43668420 in words is "forty-three million, six hundred sixty-eight thousand, four hundred twenty".