43002740 has 48 divisors (see below), whose sum is σ = 100215360. Its totient is φ = 15367680.

The previous prime is 43002721. The next prime is 43002749. The reversal of 43002740 is 4720034.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43002749) 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, 11324 + ... + 14636.

It is an arithmetic number, because the mean of its divisors is an integer number (2087820).

Almost surely, 2^43002740 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 43002740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50107680).

43002740 is an abundant number, since it is smaller than the sum of its proper divisors (57212620).

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

43002740 is a wasteful number, since it uses less digits than its factorization.

43002740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3392 (or 3390 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 43002740 is about 6557.6474440153. The cubic root of 43002740 is about 350.3472472067.

Adding to 43002740 its reverse (4720034), we get a palindrome (47722774).

The spelling of 43002740 in words is "forty-three million, two thousand, seven hundred forty".