43502240 has 48 divisors (see below), whose sum is σ = 105180768. Its totient is φ = 16993536.

The previous prime is 43502231. The next prime is 43502243. The reversal of 43502240 is 4220534.

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

It is not an unprimeable number, because it can be changed into a prime (43502243) 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, 3719 + ... + 10041.

It is an arithmetic number, because the mean of its divisors is an integer number (2191266).

Almost surely, 2^43502240 is an apocalyptic number.

43502240 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 43502240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52590384).

43502240 is an abundant number, since it is smaller than the sum of its proper divisors (61678528).

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

43502240 is a wasteful number, since it uses less digits than its factorization.

43502240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381 (or 6373 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 43502240 is about 6595.6227909122. The cubic root of 43502240 is about 351.6985194101.

Adding to 43502240 its reverse (4220534), we get a palindrome (47722774).

The spelling of 43502240 in words is "forty-three million, five hundred two thousand, two hundred forty".