43243620 has 96 divisors (see below), whose sum is σ = 145689600. Its totient is φ = 9362304.

The previous prime is 43243589. The next prime is 43243621. The reversal of 43243620 is 2634234.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (43243621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5271 + ... + 10689.

It is an arithmetic number, because the mean of its divisors is an integer number (1517600).

Almost surely, 2^43243620 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 43243620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72844800).

43243620 is an abundant number, since it is smaller than the sum of its proper divisors (102445980).

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

43243620 is a wasteful number, since it uses less digits than its factorization.

43243620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5457 (or 5455 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 43243620 is about 6575.9881386754. The cubic root of 43243620 is about 351.0001866867. Note that the first 3 decimals are identical.

Adding to 43243620 its reverse (2634234), we get a palindrome (45877854).

The spelling of 43243620 in words is "forty-three million, two hundred forty-three thousand, six hundred twenty".