228472847 has 2 divisors, whose sum is σ = 228472848. Its totient is φ = 228472846.

The previous prime is 228472841. The next prime is 228472897. The reversal of 228472847 is 748274822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228472847 - 2⁸ = 228472591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228472798 and 228472807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228472841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114236423 + 114236424.

It is an arithmetic number, because the mean of its divisors is an integer number (114236424).

Almost surely, 2^228472847 is an apocalyptic number.

228472847 is a deficient number, since it is larger than the sum of its proper divisors (1).

228472847 is an equidigital number, since it uses as much as digits as its factorization.

228472847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 401408, while the sum is 44.

The square root of 228472847 is about 15115.3182897351. The cubic root of 228472847 is about 611.3335039530. Note that the first 3 decimals are identical.

The spelling of 228472847 in words is "two hundred twenty-eight million, four hundred seventy-two thousand, eight hundred forty-seven".