43368840 has 96 divisors (see below), whose sum is σ = 143671320. Its totient is φ = 11341824.

The previous prime is 43368791. The next prime is 43368841. The reversal of 43368840 is 4886334.

It can be written as a sum of positive squares in 4 ways, for example, as 42693156 + 675684 = 6534^2 + 822^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 43368795 and 43368804.

It is not an unprimeable number, because it can be changed into a prime (43368841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17944 + ... + 20216.

Almost surely, 2^43368840 is an apocalyptic number.

43368840 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 43368840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71835660).

43368840 is an abundant number, since it is smaller than the sum of its proper divisors (100302480).

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

43368840 is a wasteful number, since it uses less digits than its factorization.

43368840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343 (or 2336 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 43368840 is about 6585.5022587499. The cubic root of 43368840 is about 351.3386557873.

The spelling of 43368840 in words is "forty-three million, three hundred sixty-eight thousand, eight hundred forty".