228023689 has 2 divisors, whose sum is σ = 228023690. Its totient is φ = 228023688.

The previous prime is 228023683. The next prime is 228023701. The reversal of 228023689 is 986320822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228010000 + 13689 = 15100^2 + 117^2 .

It is a cyclic number.

It is not a de Polignac number, because 228023689 - 2⁵ = 228023657 is a prime.

It is not a weakly prime, because it can be changed into another prime (228023683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114011844 + 114011845.

It is an arithmetic number, because the mean of its divisors is an integer number (114011845).

Almost surely, 2^228023689 is an apocalyptic number.

It is an amenable number.

228023689 is a deficient number, since it is larger than the sum of its proper divisors (1).

228023689 is an equidigital number, since it uses as much as digits as its factorization.

228023689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 228023689 is about 15100.4532713426. The cubic root of 228023689 is about 610.9326314183.

The spelling of 228023689 in words is "two hundred twenty-eight million, twenty-three thousand, six hundred eighty-nine".