43055730 has 96 divisors (see below), whose sum is σ = 120092544. Its totient is φ = 10664448.

The previous prime is 43055723. The next prime is 43055731. The reversal of 43055730 is 3755034.

It is a happy number.

43055730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 43055694 and 43055703.

It is not an unprimeable number, because it can be changed into a prime (43055731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163579 + ... + 163841.

It is an arithmetic number, because the mean of its divisors is an integer number (1250964).

Almost surely, 2^43055730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43055730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60046272).

43055730 is an abundant number, since it is smaller than the sum of its proper divisors (77036814).

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

43055730 is a wasteful number, since it uses less digits than its factorization.

43055730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 43055730 is about 6561.6865210097. The cubic root of 43055730 is about 350.4910929270.

The spelling of 43055730 in words is "forty-three million, fifty-five thousand, seven hundred thirty".