43625040 has 80 divisors (see below), whose sum is σ = 137306688. Its totient is φ = 11455488.

The previous prime is 43625039. The next prime is 43625053. The reversal of 43625040 is 4052634.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 43625040.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 14724 + ... + 17436.

Almost surely, 2^43625040 is an apocalyptic number.

43625040 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 43625040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68653344).

43625040 is an abundant number, since it is smaller than the sum of its proper divisors (93681648).

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

43625040 is a wasteful number, since it uses less digits than its factorization.

43625040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796 (or 2790 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 43625040 is about 6604.9254348554. The cubic root of 43625040 is about 352.0291384281.

Adding to 43625040 its reverse (4052634), we get a palindrome (47677674).

The spelling of 43625040 in words is "forty-three million, six hundred twenty-five thousand, forty".