228426923 has 2 divisors, whose sum is σ = 228426924. Its totient is φ = 228426922.

The previous prime is 228426907. The next prime is 228426959. The reversal of 228426923 is 329624822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228426923 - 2⁴ = 228426907 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (228426323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114213461 + 114213462.

It is an arithmetic number, because the mean of its divisors is an integer number (114213462).

Almost surely, 2^228426923 is an apocalyptic number.

228426923 is a deficient number, since it is larger than the sum of its proper divisors (1).

228426923 is an equidigital number, since it uses as much as digits as its factorization.

228426923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 228426923 is about 15113.7990922203. The cubic root of 228426923 is about 611.2925410093.

The spelling of 228426923 in words is "two hundred twenty-eight million, four hundred twenty-six thousand, nine hundred twenty-three".