43680145 has 8 divisors (see below), whose sum is σ = 55175040. Its totient is φ = 33104880.

The previous prime is 43680139. The next prime is 43680163. The reversal of 43680145 is 54108634.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43680145 - 2⁵ = 43680113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229801 + ... + 229990.

It is an arithmetic number, because the mean of its divisors is an integer number (6896880).

Almost surely, 2^43680145 is an apocalyptic number.

It is an amenable number.

43680145 is a deficient number, since it is larger than the sum of its proper divisors (11494895).

43680145 is a wasteful number, since it uses less digits than its factorization.

43680145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459815.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 43680145 is about 6609.0956264832. The cubic root of 43680145 is about 352.1772980143.

Adding to 43680145 its reverse (54108634), we get a palindrome (97788779).

The spelling of 43680145 in words is "forty-three million, six hundred eighty thousand, one hundred forty-five".