228631647 has 8 divisors (see below), whose sum is σ = 304912944. Its totient is φ = 152385728.

The previous prime is 228631643. The next prime is 228631687. The reversal of 228631647 is 746136822.

It is a happy number.

228631647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228631647 - 2² = 228631643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228631643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17173 + ... + 27425.

It is an arithmetic number, because the mean of its divisors is an integer number (38114118).

Almost surely, 2^228631647 is an apocalyptic number.

228631647 is a deficient number, since it is larger than the sum of its proper divisors (76281297).

228631647 is a wasteful number, since it uses less digits than its factorization.

228631647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17689.

The product of its digits is 96768, while the sum is 39.

The square root of 228631647 is about 15120.5703265452. The cubic root of 228631647 is about 611.4751068883.

It can be divided in two parts, 2286 and 31647, that added together give a palindrome (33933).

The spelling of 228631647 in words is "two hundred twenty-eight million, six hundred thirty-one thousand, six hundred forty-seven".