43290172 has 6 divisors (see below), whose sum is σ = 75757808. Its totient is φ = 21645084.

The previous prime is 43290157. The next prime is 43290173. The reversal of 43290172 is 27109234.

It is a self number, because there is not a number n which added to its sum of digits gives 43290172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43290173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5411268 + ... + 5411275.

Almost surely, 2^43290172 is an apocalyptic number.

It is an amenable number.

43290172 is a deficient number, since it is larger than the sum of its proper divisors (32467636).

43290172 is a wasteful number, since it uses less digits than its factorization.

43290172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10822547 (or 10822545 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 43290172 is about 6579.5267307003. The cubic root of 43290172 is about 351.1260927426.

The spelling of 43290172 in words is "forty-three million, two hundred ninety thousand, one hundred seventy-two".