43545872 has 20 divisors (see below), whose sum is σ = 88811280. Its totient is φ = 20626848.

The previous prime is 43545871. The next prime is 43545881. The reversal of 43545872 is 27854534.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (43545871) 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, 71318 + ... + 71925.

It is an arithmetic number, because the mean of its divisors is an integer number (4440564).

Almost surely, 2^43545872 is an apocalyptic number.

It is an amenable number.

43545872 is an abundant number, since it is smaller than the sum of its proper divisors (45265408).

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

43545872 is a wasteful number, since it uses less digits than its factorization.

43545872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143270 (or 143264 counting only the distinct ones).

The product of its digits is 134400, while the sum is 38.

The square root of 43545872 is about 6598.9296101716. The cubic root of 43545872 is about 351.8160626470.

The spelling of 43545872 in words is "forty-three million, five hundred forty-five thousand, eight hundred seventy-two".