228484621 has 2 divisors, whose sum is σ = 228484622. Its totient is φ = 228484620.

The previous prime is 228484577. The next prime is 228484637. The reversal of 228484621 is 126484822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219454596 + 9030025 = 14814^2 + 3005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228484621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228484651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114242310 + 114242311.

It is an arithmetic number, because the mean of its divisors is an integer number (114242311).

Almost surely, 2^228484621 is an apocalyptic number.

It is an amenable number.

228484621 is a deficient number, since it is larger than the sum of its proper divisors (1).

228484621 is an equidigital number, since it uses as much as digits as its factorization.

228484621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49152, while the sum is 37.

The square root of 228484621 is about 15115.7077571644. The cubic root of 228484621 is about 611.3440051528.

The spelling of 228484621 in words is "two hundred twenty-eight million, four hundred eighty-four thousand, six hundred twenty-one".