228376261 has 2 divisors, whose sum is σ = 228376262. Its totient is φ = 228376260.

The previous prime is 228376241. The next prime is 228376271. The reversal of 228376261 is 162673822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213890625 + 14485636 = 14625^2 + 3806^2 .

It is a cyclic number.

It is not a de Polignac number, because 228376261 - 2²³ = 219987653 is a prime.

It is a super-3 number, since 3×228376261³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 228376261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228376201) 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 as a sum of consecutive naturals, namely, 114188130 + 114188131.

It is an arithmetic number, because the mean of its divisors is an integer number (114188131).

Almost surely, 2^228376261 is an apocalyptic number.

It is an amenable number.

228376261 is a deficient number, since it is larger than the sum of its proper divisors (1).

228376261 is an equidigital number, since it uses as much as digits as its factorization.

228376261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 228376261 is about 15112.1229812360. The cubic root of 228376261 is about 611.2473455304.

The spelling of 228376261 in words is "two hundred twenty-eight million, three hundred seventy-six thousand, two hundred sixty-one".