228787487 has 2 divisors, whose sum is σ = 228787488. Its totient is φ = 228787486.

The previous prime is 228787457. The next prime is 228787529. The reversal of 228787487 is 784787822.

228787487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228787487 - 2⁶ = 228787423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228787457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114393743 + 114393744.

It is an arithmetic number, because the mean of its divisors is an integer number (114393744).

Almost surely, 2^228787487 is an apocalyptic number.

228787487 is a deficient number, since it is larger than the sum of its proper divisors (1).

228787487 is an equidigital number, since it uses as much as digits as its factorization.

228787487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2809856, while the sum is 53.

The square root of 228787487 is about 15125.7226934782. The cubic root of 228787487 is about 611.6140066412.

The spelling of 228787487 in words is "two hundred twenty-eight million, seven hundred eighty-seven thousand, four hundred eighty-seven".