43013440 has 28 divisors (see below), whose sum is σ = 102426516. Its totient is φ = 17205248.

The previous prime is 43013423. The next prime is 43013483. The reversal of 43013440 is 4431034.

It can be written as a sum of positive squares in 2 ways, for example, as 27709696 + 15303744 = 5264^2 + 3912^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66889 + ... + 67528.

Almost surely, 2^43013440 is an apocalyptic number.

43013440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43013440 is an abundant number, since it is smaller than the sum of its proper divisors (59413076).

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

43013440 is a wasteful number, since it uses less digits than its factorization.

43013440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134434 (or 134424 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 43013440 is about 6558.4632346305. The cubic root of 43013440 is about 350.3763027558.

Adding to 43013440 its reverse (4431034), we get a palindrome (47444474).

The spelling of 43013440 in words is "forty-three million, thirteen thousand, four hundred forty".