228348081 has 12 divisors (see below), whose sum is σ = 355208308. Its totient is φ = 140521824.

The previous prime is 228348079. The next prime is 228348091. The reversal of 228348081 is 180843822.

It is a happy number.

228348081 is a `hidden beast` number, since 22 + 83 + 480 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 116834481 + 111513600 = 10809^2 + 10560^2 .

It is not a de Polignac number, because 228348081 - 2¹ = 228348079 is a prime.

It is a super-2 number, since 2×228348081² = 104285692192765122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228348011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 975730 + ... + 975963.

Almost surely, 2^228348081 is an apocalyptic number.

It is an amenable number.

228348081 is a deficient number, since it is larger than the sum of its proper divisors (126860227).

228348081 is a wasteful number, since it uses less digits than its factorization.

228348081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951712 (or 1951709 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 228348081 is about 15111.1905884348. The cubic root of 228348081 is about 611.2222033102. Note that the first 4 decimals are identical.

The spelling of 228348081 in words is "two hundred twenty-eight million, three hundred forty-eight thousand, eighty-one".