43454040 has 192 divisors, whose sum is σ = 159148800. Its totient is φ = 9295872.

The previous prime is 43454039. The next prime is 43454051. The reversal of 43454040 is 4045434.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 43454040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 242671 + ... + 242849.

It is an arithmetic number, because the mean of its divisors is an integer number (828900).

Almost surely, 2^43454040 is an apocalyptic number.

43454040 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 43454040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79574400).

43454040 is an abundant number, since it is smaller than the sum of its proper divisors (115694760).

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

43454040 is a wasteful number, since it uses less digits than its factorization.

43454040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 43454040 is about 6591.9678397274. The cubic root of 43454040 is about 351.5685787196.

Adding to 43454040 its reverse (4045434), we get a palindrome (47499474).

It can be divided in two parts, 4345 and 4040, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 43454040 in words is "forty-three million, four hundred fifty-four thousand, forty".