43213320 has 192 divisors, whose sum is σ = 155675520. Its totient is φ = 10340352.

The previous prime is 43213319. The next prime is 43213367. The reversal of 43213320 is 2331234.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 43213293 and 43213302.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140607 + ... + 140913.

It is an arithmetic number, because the mean of its divisors is an integer number (810810).

Almost surely, 2^43213320 is an apocalyptic number.

43213320 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 43213320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77837760).

43213320 is an abundant number, since it is smaller than the sum of its proper divisors (112462200).

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

43213320 is a wasteful number, since it uses less digits than its factorization.

43213320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 43213320 is about 6573.6838986979. The cubic root of 43213320 is about 350.9181877652.

Adding to 43213320 its reverse (2331234), we get a palindrome (45544554).

The spelling of 43213320 in words is "forty-three million, two hundred thirteen thousand, three hundred twenty".