228128827 has 2 divisors, whose sum is σ = 228128828. Its totient is φ = 228128826.

The previous prime is 228128773. The next prime is 228128833. The reversal of 228128827 is 728821822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228128827 - 2²³ = 219740219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228128827.

It is not a weakly prime, because it can be changed into another prime (228128867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114064413 + 114064414.

It is an arithmetic number, because the mean of its divisors is an integer number (114064414).

Almost surely, 2^228128827 is an apocalyptic number.

228128827 is a deficient number, since it is larger than the sum of its proper divisors (1).

228128827 is an equidigital number, since it uses as much as digits as its factorization.

228128827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57344, while the sum is 40.

The square root of 228128827 is about 15103.9341563713. The cubic root of 228128827 is about 611.0265140111.

The spelling of 228128827 in words is "two hundred twenty-eight million, one hundred twenty-eight thousand, eight hundred twenty-seven".