43047172 has 12 divisors (see below), whose sum is σ = 86094400. Its totient is φ = 18448776.

The previous prime is 43047161. The next prime is 43047197. The reversal of 43047172 is 27174034.

43047172 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 1537399 = 43047172 / (4 + 3 + 0 + 4 + 7 + 1 + 7 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 43047172.

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, 768672 + ... + 768727.

Almost surely, 2^43047172 is an apocalyptic number.

It is an amenable number.

43047172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

43047172 is a wasteful number, since it uses less digits than its factorization.

43047172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537410 (or 1537408 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 43047172 is about 6561.0343696707. The cubic root of 43047172 is about 350.4678695254.

It can be divided in two parts, 4304 and 7172, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 43047172 in words is "forty-three million, forty-seven thousand, one hundred seventy-two".