228317616 has 200 divisors, whose sum is σ = 718931664. Its totient is φ = 69672960.

The previous prime is 228317597. The next prime is 228317627. The reversal of 228317616 is 616713822.

228317616 is a `hidden beast` number, since 2 + 2 + 8 + 31 + 7 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 947256 + ... + 947496.

Almost surely, 2^228317616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228317616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359465832).

228317616 is an abundant number, since it is smaller than the sum of its proper divisors (490614048).

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

228317616 is a wasteful number, since it uses less digits than its factorization.

228317616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 306 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 228317616 is about 15110.1825270246. The cubic root of 228317616 is about 611.1950200841.

The spelling of 228317616 in words is "two hundred twenty-eight million, three hundred seventeen thousand, six hundred sixteen".