228347771 has 4 divisors (see below), whose sum is σ = 228439632. Its totient is φ = 228255912.

The previous prime is 228347753. The next prime is 228347789. The reversal of 228347771 is 177743822.

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

It is an interprime number because it is at equal distance from previous prime (228347753) and next prime (228347789).

It is a cyclic number.

It is not a de Polignac number, because 228347771 - 2¹⁰ = 228346747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228347701) 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, 42095 + ... + 47208.

It is an arithmetic number, because the mean of its divisors is an integer number (57109908).

Almost surely, 2^228347771 is an apocalyptic number.

228347771 is a deficient number, since it is larger than the sum of its proper divisors (91861).

228347771 is an equidigital number, since it uses as much as digits as its factorization.

228347771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91860.

The product of its digits is 131712, while the sum is 41.

The square root of 228347771 is about 15111.1803311323. The cubic root of 228347771 is about 611.2219267164.

The spelling of 228347771 in words is "two hundred twenty-eight million, three hundred forty-seven thousand, seven hundred seventy-one".