43250240 has 84 divisors (see below), whose sum is σ = 113304828. Its totient is φ = 15713280.

The previous prime is 43250201. The next prime is 43250269. The reversal of 43250240 is 4205234.

It can be written as a sum of positive squares in 2 ways, for example, as 7441984 + 35808256 = 2728^2 + 5984^2 .

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

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 38162 + ... + 39278.

It is an arithmetic number, because the mean of its divisors is an integer number (1348867).

Almost surely, 2^43250240 is an apocalyptic number.

43250240 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 43250240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56652414).

43250240 is an abundant number, since it is smaller than the sum of its proper divisors (70054588).

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

43250240 is a wasteful number, since it uses less digits than its factorization.

43250240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1135 counting only the distinct ones).

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

The square root of 43250240 is about 6576.4914658197. The cubic root of 43250240 is about 351.0180968638.

Adding to 43250240 its reverse (4205234), we get a palindrome (47455474).

The spelling of 43250240 in words is "forty-three million, two hundred fifty thousand, two hundred forty".