43621272 has 48 divisors (see below), whose sum is σ = 119652000. Its totient is φ = 14354496.

The previous prime is 43621267. The next prime is 43621273. The reversal of 43621272 is 27212634.

43621272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43621273) 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 11 ways as a sum of consecutive naturals, for example, 1854 + ... + 9522.

It is an arithmetic number, because the mean of its divisors is an integer number (2492750).

Almost surely, 2^43621272 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 43621272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59826000).

43621272 is an abundant number, since it is smaller than the sum of its proper divisors (76030728).

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

43621272 is a wasteful number, since it uses less digits than its factorization.

43621272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7760 (or 7753 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 43621272 is about 6604.6401870200. The cubic root of 43621272 is about 352.0190029342.

The spelling of 43621272 in words is "forty-three million, six hundred twenty-one thousand, two hundred seventy-two".