43705420 has 48 divisors (see below), whose sum is σ = 100644768. Its totient is φ = 15810560.

The previous prime is 43705379. The next prime is 43705423. The reversal of 43705420 is 2450734.

It is not an unprimeable number, because it can be changed into a prime (43705423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56154 + ... + 56926.

It is an arithmetic number, because the mean of its divisors is an integer number (2096766).

Almost surely, 2^43705420 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 43705420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50322384).

43705420 is an abundant number, since it is smaller than the sum of its proper divisors (56939348).

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

43705420 is a wasteful number, since it uses less digits than its factorization.

43705420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050 (or 1048 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 43705420 is about 6611.0074875166. The cubic root of 43705420 is about 352.2452126613.

The spelling of 43705420 in words is "forty-three million, seven hundred five thousand, four hundred twenty".