43420356 has 72 divisors (see below), whose sum is σ = 127842624. Its totient is φ = 12168000.

The previous prime is 43420331. The next prime is 43420379. The reversal of 43420356 is 65302434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11731 + ... + 14981.

It is an arithmetic number, because the mean of its divisors is an integer number (1775592).

Almost surely, 2^43420356 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 43420356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63921312).

43420356 is an abundant number, since it is smaller than the sum of its proper divisors (84422268).

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

43420356 is a wasteful number, since it uses less digits than its factorization.

43420356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3321 (or 3316 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 43420356 is about 6589.4124169003. The cubic root of 43420356 is about 351.4777141554.

The spelling of 43420356 in words is "forty-three million, four hundred twenty thousand, three hundred fifty-six".