43456420 has 144 divisors (see below), whose sum is σ = 120113280. Its totient is φ = 12856320.

The previous prime is 43456417. The next prime is 43456423. The reversal of 43456420 is 2465434.

43456420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (43456417) and next prime (43456423).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (43456423) 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, 1401805 + ... + 1401835.

It is an arithmetic number, because the mean of its divisors is an integer number (834120).

Almost surely, 2^43456420 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 43456420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60056640).

43456420 is an abundant number, since it is smaller than the sum of its proper divisors (76656860).

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

43456420 is a wasteful number, since it uses less digits than its factorization.

43456420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 43456420 is about 6592.1483599810. The cubic root of 43456420 is about 351.5749971327.

The spelling of 43456420 in words is "forty-three million, four hundred fifty-six thousand, four hundred twenty".