228081975 has 72 divisors (see below), whose sum is σ = 425295696. Its totient is φ = 107712000.

The previous prime is 228081923. The next prime is 228082009. The reversal of 228081975 is 579180822.

It is not a de Polignac number, because 228081975 - 2⁹ = 228081463 is a prime.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 371769 + ... + 372381.

Almost surely, 2^228081975 is an apocalyptic number.

228081975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

228081975 is a deficient number, since it is larger than the sum of its proper divisors (197213721).

228081975 is a wasteful number, since it uses less digits than its factorization.

228081975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 228081975 is about 15102.3830900954. The cubic root of 228081975 is about 610.9846812527.

It can be divided in two parts, 2280 and 81975, that added together give a triangular number (84255 = T₄₁₀).

The spelling of 228081975 in words is "two hundred twenty-eight million, eighty-one thousand, nine hundred seventy-five".