228172160 has 64 divisors (see below), whose sum is σ = 547311600. Its totient is φ = 90961920.

The previous prime is 228172151. The next prime is 228172187. The reversal of 228172160 is 61271822.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345911 + ... + 346569.

Almost surely, 2^228172160 is an apocalyptic number.

228172160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228172160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273655800).

228172160 is an abundant number, since it is smaller than the sum of its proper divisors (319139440).

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

228172160 is an equidigital number, since it uses as much as digits as its factorization.

228172160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219 (or 1207 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 228172160 is about 15105.3685820638. The cubic root of 228172160 is about 611.0651996607.

The spelling of 228172160 in words is "two hundred twenty-eight million, one hundred seventy-two thousand, one hundred sixty".