228024421 has 2 divisors, whose sum is σ = 228024422. Its totient is φ = 228024420.

The previous prime is 228024373. The next prime is 228024427. The reversal of 228024421 is 124420822.

228024421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141348321 + 86676100 = 11889^2 + 9310^2 .

It is a cyclic number.

It is not a de Polignac number, because 228024421 - 2¹⁵ = 227991653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228024427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114012210 + 114012211.

It is an arithmetic number, because the mean of its divisors is an integer number (114012211).

Almost surely, 2^228024421 is an apocalyptic number.

It is an amenable number.

228024421 is a deficient number, since it is larger than the sum of its proper divisors (1).

228024421 is an equidigital number, since it uses as much as digits as its factorization.

228024421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 228024421 is about 15100.4775090061. The cubic root of 228024421 is about 610.9332851548.

The spelling of 228024421 in words is "two hundred twenty-eight million, twenty-four thousand, four hundred twenty-one".