228413869 has 6 divisors (see below), whose sum is σ = 229351850. Its totient is φ = 227477856.

The previous prime is 228413849. The next prime is 228413873. The reversal of 228413869 is 968314822.

It can be written as a sum of positive squares in 3 ways, for example, as 150356644 + 78057225 = 12262^2 + 8835^2 .

It is not a de Polignac number, because 228413869 - 2⁵ = 228413837 is a prime.

It is a super-2 number, since 2×228413869² = 104345791103098322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228413849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 281937 + ... + 282745.

Almost surely, 2^228413869 is an apocalyptic number.

It is an amenable number.

228413869 is a deficient number, since it is larger than the sum of its proper divisors (937981).

228413869 is an frugal number, since it uses more digits than its factorization.

228413869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967 (or 1158 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 228413869 is about 15113.3672290459. The cubic root of 228413869 is about 611.2808961986.

The spelling of 228413869 in words is "two hundred twenty-eight million, four hundred thirteen thousand, eight hundred sixty-nine".