43731372 has 54 divisors (see below), whose sum is σ = 107969932. Its totient is φ = 13775344.

The previous prime is 43731367. The next prime is 43731397. The reversal of 43731372 is 27313734.

43731372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×43731372³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 526843 + ... + 526925.

Almost surely, 2^43731372 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 43731372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53984966).

43731372 is an abundant number, since it is smaller than the sum of its proper divisors (64238560).

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

43731372 is a wasteful number, since it uses less digits than its factorization.

43731372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 111 counting only the distinct ones).

The product of its digits is 10584, while the sum is 30.

The square root of 43731372 is about 6612.9699832980. The cubic root of 43731372 is about 352.3149191872.

The spelling of 43731372 in words is "forty-three million, seven hundred thirty-one thousand, three hundred seventy-two".