228161210 has 8 divisors (see below), whose sum is σ = 410690196. Its totient is φ = 91264480.

The previous prime is 228161191. The next prime is 228161221. The reversal of 228161210 is 12161822.

It can be written as a sum of positive squares in 2 ways, for example, as 227135041 + 1026169 = 15071^2 + 1013^2 .

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

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 11408051 + ... + 11408070.

Almost surely, 2^228161210 is an apocalyptic number.

228161210 is a deficient number, since it is larger than the sum of its proper divisors (182528986).

228161210 is a wasteful number, since it uses less digits than its factorization.

228161210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22816128.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 228161210 is about 15105.0061237988. The cubic root of 228161210 is about 611.0554244820.

The spelling of 228161210 in words is "two hundred twenty-eight million, one hundred sixty-one thousand, two hundred ten".