43408872 has 80 divisors (see below), whose sum is σ = 130963140. Its totient is φ = 13353984.

The previous prime is 43408867. The next prime is 43408877. The reversal of 43408872 is 27880434.

It is an interprime number because it is at equal distance from previous prime (43408867) and next prime (43408877).

It can be written as a sum of positive squares in 2 ways, for example, as 42693156 + 715716 = 6534^2 + 846^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (43408877) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5848 + ... + 11000.

Almost surely, 2^43408872 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 43408872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65481570).

43408872 is an abundant number, since it is smaller than the sum of its proper divisors (87554268).

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

43408872 is a wasteful number, since it uses less digits than its factorization.

43408872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5184 (or 5171 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 43408872 is about 6588.5409613965. The cubic root of 43408872 is about 351.4467246508.

The spelling of 43408872 in words is "forty-three million, four hundred eight thousand, eight hundred seventy-two".