228424649 has 2 divisors, whose sum is σ = 228424650. Its totient is φ = 228424648.

The previous prime is 228424633. The next prime is 228424663. The reversal of 228424649 is 946424822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213160000 + 15264649 = 14600^2 + 3907^2 .

It is a cyclic number.

It is not a de Polignac number, because 228424649 - 2⁴ = 228424633 is a prime.

It is not a weakly prime, because it can be changed into another prime (228424249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114212324 + 114212325.

It is an arithmetic number, because the mean of its divisors is an integer number (114212325).

Almost surely, 2^228424649 is an apocalyptic number.

It is an amenable number.

228424649 is a deficient number, since it is larger than the sum of its proper divisors (1).

228424649 is an equidigital number, since it uses as much as digits as its factorization.

228424649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 41.

The square root of 228424649 is about 15113.7238627679. The cubic root of 228424649 is about 611.2905125212.

The spelling of 228424649 in words is "two hundred twenty-eight million, four hundred twenty-four thousand, six hundred forty-nine".