243150172 has 24 divisors (see below), whose sum is σ = 436745232. Its totient is φ = 118377600.

The previous prime is 243150161. The next prime is 243150217. The reversal of 243150172 is 271051342.

It is a happy number.

It is a super-2 number, since 2×243150172² = 118244012287259168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107283 + ... + 109525.

It is an arithmetic number, because the mean of its divisors is an integer number (18197718).

Almost surely, 2^243150172 is an apocalyptic number.

It is an amenable number.

243150172 is a deficient number, since it is larger than the sum of its proper divisors (193595060).

243150172 is a wasteful number, since it uses less digits than its factorization.

243150172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2949 (or 2947 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 243150172 is about 15593.2732933147. The cubic root of 243150172 is about 624.1536679125.

The spelling of 243150172 in words is "two hundred forty-three million, one hundred fifty thousand, one hundred seventy-two".