228000172 has 12 divisors (see below), whose sum is σ = 399160216. Its totient is φ = 113954400.

The previous prime is 228000169. The next prime is 228000187. The reversal of 228000172 is 271000822.

228000172 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

228000172 is strictly pandigital in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1408 + ... + 21400.

Almost surely, 2^228000172 is an apocalyptic number.

It is an amenable number.

228000172 is a deficient number, since it is larger than the sum of its proper divisors (171160044).

228000172 is a wasteful number, since it uses less digits than its factorization.

228000172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22848 (or 22846 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 228000172 is about 15099.6745660296. The cubic root of 228000172 is about 610.9116280499.

Adding to 228000172 its reverse (271000822), we get a palindrome (499000994).

The spelling of 228000172 in words is "two hundred twenty-eight million, one hundred seventy-two", and thus it is an aban number.