228000961 has 2 divisors, whose sum is σ = 228000962. Its totient is φ = 228000960.

The previous prime is 228000953. The next prime is 228000967. The reversal of 228000961 is 169000822.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138509361 + 89491600 = 11769^2 + 9460^2 .

It is a cyclic number.

It is not a de Polignac number, because 228000961 - 2³ = 228000953 is a prime.

It is not a weakly prime, because it can be changed into another prime (228000967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114000480 + 114000481.

It is an arithmetic number, because the mean of its divisors is an integer number (114000481).

Almost surely, 2^228000961 is an apocalyptic number.

It is an amenable number.

228000961 is a deficient number, since it is larger than the sum of its proper divisors (1).

228000961 is an equidigital number, since it uses as much as digits as its factorization.

228000961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 228000961 is about 15099.7006923978. The cubic root of 228000961 is about 610.9123327405.

The spelling of 228000961 in words is "two hundred twenty-eight million, nine hundred sixty-one", and thus it is an aban number.