43952040 has 144 divisors (see below), whose sum is σ = 157166100. Its totient is φ = 10644480.

The previous prime is 43952039. The next prime is 43952047. The reversal of 43952040 is 4025934.

It can be written as a sum of positive squares in 2 ways, for example, as 42693156 + 1258884 = 6534^2 + 1122^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43951995 and 43952013.

It is not an unprimeable number, because it can be changed into a prime (43952047) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 43056 + ... + 44064.

Almost surely, 2^43952040 is an apocalyptic number.

43952040 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 43952040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78583050).

43952040 is an abundant number, since it is smaller than the sum of its proper divisors (113214060).

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

43952040 is a wasteful number, since it uses less digits than its factorization.

43952040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 43952040 is about 6629.6334740316. The cubic root of 43952040 is about 352.9065175770.

Adding to 43952040 its reverse (4025934), we get a palindrome (47977974).

The spelling of 43952040 in words is "forty-three million, nine hundred fifty-two thousand, forty".