43838340 has 288 divisors, whose sum is σ = 163021824. Its totient is φ = 8709120.

The previous prime is 43838329. The next prime is 43838363. The reversal of 43838340 is 4383834.

43838340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 95 ways as a sum of consecutive naturals, for example, 1184802 + ... + 1184838.

It is an arithmetic number, because the mean of its divisors is an integer number (566048).

Almost surely, 2^43838340 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 43838340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81510912).

43838340 is an abundant number, since it is smaller than the sum of its proper divisors (119183484).

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

43838340 is a wasteful number, since it uses less digits than its factorization.

43838340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 43838340 is about 6621.0527863777. The cubic root of 43838340 is about 352.6019422475.

The spelling of 43838340 in words is "forty-three million, eight hundred thirty-eight thousand, three hundred forty".