43821104 has 40 divisors (see below), whose sum is σ = 92815488. Its totient is φ = 19952640.

The previous prime is 43821079. The next prime is 43821109. The reversal of 43821104 is 40112834.

It is a self number, because there is not a number n which added to its sum of digits gives 43821104.

It is not an unprimeable number, because it can be changed into a prime (43821109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5834 + ... + 11030.

Almost surely, 2^43821104 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 43821104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46407744).

43821104 is an abundant number, since it is smaller than the sum of its proper divisors (48994384).

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

43821104 is a wasteful number, since it uses less digits than its factorization.

43821104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5253 (or 5247 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 43821104 is about 6619.7510527209. The cubic root of 43821104 is about 352.5557251405. Note that the first 3 decimals are identical.

Adding to 43821104 its reverse (40112834), we get a palindrome (83933938).

The spelling of 43821104 in words is "forty-three million, eight hundred twenty-one thousand, one hundred four".