228082505 has 24 divisors (see below), whose sum is σ = 319120200. Its totient is φ = 156038400.

The previous prime is 228082499. The next prime is 228082511. The reversal of 228082505 is 505280822.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (228082499) and next prime (228082511).

It can be written as a sum of positive squares in 4 ways, for example, as 39075001 + 189007504 = 6251^2 + 13748^2 .

It is not a de Polignac number, because 228082505 - 2²² = 223888201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146471 + ... + 148019.

It is an arithmetic number, because the mean of its divisors is an integer number (13296675).

Almost surely, 2^228082505 is an apocalyptic number.

It is an amenable number.

228082505 is a deficient number, since it is larger than the sum of its proper divisors (91037695).

228082505 is a wasteful number, since it uses less digits than its factorization.

228082505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 2162 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 228082505 is about 15102.4006369848. The cubic root of 228082505 is about 610.9851545060.

The spelling of 228082505 in words is "two hundred twenty-eight million, eighty-two thousand, five hundred five".