228743047 has 4 divisors (see below), whose sum is σ = 246338680. Its totient is φ = 211147416.

The previous prime is 228743023. The next prime is 228743051. The reversal of 228743047 is 740347822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740347822 = 2 ⋅370173911.

It is a cyclic number.

It is not a de Polignac number, because 228743047 - 2¹¹ = 228740999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228742997 and 228743015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228743057) 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, 8797797 + ... + 8797822.

It is an arithmetic number, because the mean of its divisors is an integer number (61584670).

Almost surely, 2^228743047 is an apocalyptic number.

228743047 is a deficient number, since it is larger than the sum of its proper divisors (17595633).

228743047 is a wasteful number, since it uses less digits than its factorization.

228743047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17595632.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 228743047 is about 15124.2536014178. The cubic root of 228743047 is about 611.5744038249.

It can be divided in two parts, 22874 and 3047, that added together give a square (25921 = 161²).

The spelling of 228743047 in words is "two hundred twenty-eight million, seven hundred forty-three thousand, forty-seven".