228072216 has 16 divisors (see below), whose sum is σ = 570180600. Its totient is φ = 76024064.

The previous prime is 228072191. The next prime is 228072223. The reversal of 228072216 is 612270822.

It is a super-2 number, since 2×228072216² = 104033871422301312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4751481 + ... + 4751528.

Almost surely, 2^228072216 is an apocalyptic number.

It is an amenable number.

228072216 is an abundant number, since it is smaller than the sum of its proper divisors (342108384).

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

228072216 is a wasteful number, since it uses less digits than its factorization.

228072216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9503018 (or 9503014 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 228072216 is about 15102.0599919349. The cubic root of 228072216 is about 610.9759670108.

The spelling of 228072216 in words is "two hundred twenty-eight million, seventy-two thousand, two hundred sixteen".