228116647 has 4 divisors (see below), whose sum is σ = 248854536. Its totient is φ = 207378760.

The previous prime is 228116633. The next prime is 228116683. The reversal of 228116647 is 746611822.

228116647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228116647 - 2¹¹ = 228114599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228116627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10368928 + ... + 10368949.

It is an arithmetic number, because the mean of its divisors is an integer number (62213634).

Almost surely, 2^228116647 is an apocalyptic number.

228116647 is a deficient number, since it is larger than the sum of its proper divisors (20737889).

228116647 is a wasteful number, since it uses less digits than its factorization.

228116647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20737888.

The product of its digits is 32256, while the sum is 37.

The square root of 228116647 is about 15103.5309447824. The cubic root of 228116647 is about 611.0156394021.

The spelling of 228116647 in words is "two hundred twenty-eight million, one hundred sixteen thousand, six hundred forty-seven".