228112618 has 4 divisors (see below), whose sum is σ = 342168930. Its totient is φ = 114056308.

The previous prime is 228112589. The next prime is 228112639. The reversal of 228112618 is 816211822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 198049329 + 30063289 = 14073^2 + 5483^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 228112618.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57028153 + ... + 57028156.

Almost surely, 2^228112618 is an apocalyptic number.

228112618 is a deficient number, since it is larger than the sum of its proper divisors (114056312).

228112618 is a wasteful number, since it uses less digits than its factorization.

228112618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114056311.

The product of its digits is 3072, while the sum is 31.

The square root of 228112618 is about 15103.3975647865. The cubic root of 228112618 is about 611.0120421248.

The spelling of 228112618 in words is "two hundred twenty-eight million, one hundred twelve thousand, six hundred eighteen".