43734040 has 64 divisors (see below), whose sum is σ = 117365760. Its totient is φ = 14340480.

The previous prime is 43734023. The next prime is 43734043. The reversal of 43734040 is 4043734.

It is a junction number, because it is equal to n+sod(n) for n = 43733996 and 43734014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43734043) 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 15 ways as a sum of consecutive naturals, for example, 3045 + ... + 9835.

It is an arithmetic number, because the mean of its divisors is an integer number (1833840).

Almost surely, 2^43734040 is an apocalyptic number.

43734040 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 43734040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58682880).

43734040 is an abundant number, since it is smaller than the sum of its proper divisors (73631720).

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

43734040 is a wasteful number, since it uses less digits than its factorization.

43734040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6832 (or 6828 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 43734040 is about 6613.1717050142. The cubic root of 43734040 is about 352.3220838156.

Adding to 43734040 its reverse (4043734), we get a palindrome (47777774).

The spelling of 43734040 in words is "forty-three million, seven hundred thirty-four thousand, forty".