43089920 has 64 divisors (see below), whose sum is σ = 103807440. Its totient is φ = 17170432.

The previous prime is 43089899. The next prime is 43089953. The reversal of 43089920 is 2998034.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163709 + ... + 163971.

Almost surely, 2^43089920 is an apocalyptic number.

43089920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43089920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51903720).

43089920 is an abundant number, since it is smaller than the sum of its proper divisors (60717520).

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

43089920 is an frugal number, since it uses more digits than its factorization.

43089920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 43089920 is about 6564.2912793385. The cubic root of 43089920 is about 350.5838418669.

The spelling of 43089920 in words is "forty-three million, eighty-nine thousand, nine hundred twenty".