228481869 has 16 divisors (see below), whose sum is σ = 379814400. Its totient is φ = 118691760.

The previous prime is 228481867. The next prime is 228481907. The reversal of 228481869 is 968184822.

It is not a de Polignac number, because 228481869 - 2¹ = 228481867 is a prime.

It is a super-2 number, since 2×228481869² = 104407928923466322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228481867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494319 + ... + 494780.

It is an arithmetic number, because the mean of its divisors is an integer number (23738400).

Almost surely, 2^228481869 is an apocalyptic number.

It is an amenable number.

228481869 is a deficient number, since it is larger than the sum of its proper divisors (151332531).

228481869 is a wasteful number, since it uses less digits than its factorization.

228481869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989120.

The product of its digits is 442368, while the sum is 48.

The square root of 228481869 is about 15115.6167257575. The cubic root of 228481869 is about 611.3415506835.

The spelling of 228481869 in words is "two hundred twenty-eight million, four hundred eighty-one thousand, eight hundred sixty-nine".