228143647 has 8 divisors (see below), whose sum is σ = 238312800. Its totient is φ = 217995360.

The previous prime is 228143611. The next prime is 228143651. The reversal of 228143647 is 746341822.

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 228143647 - 2²⁷ = 93925919 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 (228143347) 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, 19729 + ... + 29077.

It is an arithmetic number, because the mean of its divisors is an integer number (29789100).

Almost surely, 2^228143647 is an apocalyptic number.

228143647 is a deficient number, since it is larger than the sum of its proper divisors (10169153).

228143647 is a wasteful number, since it uses less digits than its factorization.

228143647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10433.

The product of its digits is 64512, while the sum is 37.

The square root of 228143647 is about 15104.4247490595. The cubic root of 228143647 is about 611.0397451562.

The spelling of 228143647 in words is "two hundred twenty-eight million, one hundred forty-three thousand, six hundred forty-seven".