43680444 has 12 divisors (see below), whose sum is σ = 101921064. Its totient is φ = 14560144.

The previous prime is 43680419. The next prime is 43680451. The reversal of 43680444 is 44408634.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1820007 + ... + 1820030.

It is an arithmetic number, because the mean of its divisors is an integer number (8493422).

Almost surely, 2^43680444 is an apocalyptic number.

It is an amenable number.

43680444 is an abundant number, since it is smaller than the sum of its proper divisors (58240620).

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

43680444 is a wasteful number, since it uses less digits than its factorization.

43680444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640044 (or 3640042 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The square root of 43680444 is about 6609.1182467860. The cubic root of 43680444 is about 352.1781015890.

The spelling of 43680444 in words is "forty-three million, six hundred eighty thousand, four hundred forty-four".