43680020 has 12 divisors (see below), whose sum is σ = 91728084. Its totient is φ = 17472000.

The previous prime is 43679989. The next prime is 43680029. The reversal of 43680020 is 2008634.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8491396 + 35188624 = 2914^2 + 5932^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43680029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1091981 + ... + 1092020.

It is an arithmetic number, because the mean of its divisors is an integer number (7644007).

Almost surely, 2^43680020 is an apocalyptic number.

It is an amenable number.

43680020 is an abundant number, since it is smaller than the sum of its proper divisors (48048064).

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

43680020 is a wasteful number, since it uses less digits than its factorization.

43680020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184010 (or 2184008 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 43680020 is about 6609.0861698120. The cubic root of 43680020 is about 352.1769620707.

Adding to 43680020 its reverse (2008634), we get a palindrome (45688654).

The spelling of 43680020 in words is "forty-three million, six hundred eighty thousand, twenty".