228871647 has 12 divisors (see below), whose sum is σ = 330826704. Its totient is φ = 152472960.

The previous prime is 228871637. The next prime is 228871661. The reversal of 228871647 is 746178822.

It is not a de Polignac number, because 228871647 - 2⁴ = 228871631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228871637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5647 + ... + 22127.

It is an arithmetic number, because the mean of its divisors is an integer number (27568892).

Almost surely, 2^228871647 is an apocalyptic number.

228871647 is a deficient number, since it is larger than the sum of its proper divisors (101955057).

228871647 is a wasteful number, since it uses less digits than its factorization.

228871647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18030 (or 18027 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 228871647 is about 15128.5044535142. The cubic root of 228871647 is about 611.6889919842.

The spelling of 228871647 in words is "two hundred twenty-eight million, eight hundred seventy-one thousand, six hundred forty-seven".