43240400 has 60 divisors (see below), whose sum is σ = 118733472. Its totient is φ = 14824320.

The previous prime is 43240397. The next prime is 43240411. The reversal of 43240400 is 404234.

43240400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4922 + ... + 10521.

Almost surely, 2^43240400 is an apocalyptic number.

43240400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43240400 is an abundant number, since it is smaller than the sum of its proper divisors (75493072).

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

43240400 is a wasteful number, since it uses less digits than its factorization.

43240400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15468 (or 15457 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 43240400 is about 6575.7433039923. The cubic root of 43240400 is about 350.9914744292.

Adding to 43240400 its reverse (404234), we get a palindrome (43644634).

The spelling of 43240400 in words is "forty-three million, two hundred forty thousand, four hundred".