43172930 has 16 divisors (see below), whose sum is σ = 78777144. Its totient is φ = 17032320.

The previous prime is 43172929. The next prime is 43172939. The reversal of 43172930 is 3927134.

It can be written as a sum of positive squares in 4 ways, for example, as 37589161 + 5583769 = 6131^2 + 2363^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43172893 and 43172902.

It is not an unprimeable number, because it can be changed into a prime (43172939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28841 + ... + 30300.

Almost surely, 2^43172930 is an apocalyptic number.

43172930 is a deficient number, since it is larger than the sum of its proper divisors (35604214).

43172930 is a wasteful number, since it uses less digits than its factorization.

43172930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59221.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 43172930 is about 6570.6110826924. The cubic root of 43172930 is about 350.8088233088.

The spelling of 43172930 in words is "forty-three million, one hundred seventy-two thousand, nine hundred thirty".