228687427 has 2 divisors, whose sum is σ = 228687428. Its totient is φ = 228687426.

The previous prime is 228687409. The next prime is 228687449. The reversal of 228687427 is 724786822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228687427 - 2¹⁵ = 228654659 is a prime.

It is not a weakly prime, because it can be changed into another prime (228687457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114343713 + 114343714.

It is an arithmetic number, because the mean of its divisors is an integer number (114343714).

Almost surely, 2^228687427 is an apocalyptic number.

228687427 is a deficient number, since it is larger than the sum of its proper divisors (1).

228687427 is an equidigital number, since it uses as much as digits as its factorization.

228687427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 602112, while the sum is 46.

The square root of 228687427 is about 15122.4147212011. The cubic root of 228687427 is about 611.5248306958.

The spelling of 228687427 in words is "two hundred twenty-eight million, six hundred eighty-seven thousand, four hundred twenty-seven".