43912836 has 108 divisors (see below), whose sum is σ = 129405276. Its totient is φ = 12503040.

The previous prime is 43912831. The next prime is 43912837. The reversal of 43912836 is 63821934.

It can be written as a sum of positive squares in 2 ways, for example, as 30735936 + 13176900 = 5544^2 + 3630^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 43912836.

It is not an unprimeable number, because it can be changed into a prime (43912831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 73756 + ... + 74348.

It is an arithmetic number, because the mean of its divisors is an integer number (1198197).

Almost surely, 2^43912836 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 43912836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64702638).

43912836 is an abundant number, since it is smaller than the sum of its proper divisors (85492440).

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

43912836 is a wasteful number, since it uses less digits than its factorization.

43912836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 626 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 43912836 is about 6626.6760898659. The cubic root of 43912836 is about 352.8015587572.

It can be divided in two parts, 4391 and 2836, that added together give a palindrome (7227).

The spelling of 43912836 in words is "forty-three million, nine hundred twelve thousand, eight hundred thirty-six".