228168746 has 8 divisors (see below), whose sum is σ = 368580324. Its totient is φ = 105308640.

The previous prime is 228168709. The next prime is 228168757. The reversal of 228168746 is 647861822.

It can be written as a sum of positive squares in 2 ways, for example, as 161010721 + 67158025 = 12689^2 + 8195^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 228168697 and 228168706.

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 3 ways as a sum of consecutive naturals, for example, 4387835 + ... + 4387886.

Almost surely, 2^228168746 is an apocalyptic number.

228168746 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

228168746 is a deficient number, since it is larger than the sum of its proper divisors (140411578).

228168746 is a wasteful number, since it uses less digits than its factorization.

228168746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8775736.

The product of its digits is 258048, while the sum is 44.

The square root of 228168746 is about 15105.2555754611. The cubic root of 228168746 is about 611.0621519810.

The spelling of 228168746 in words is "two hundred twenty-eight million, one hundred sixty-eight thousand, seven hundred forty-six".