228102818 has 4 divisors (see below), whose sum is σ = 342154230. Its totient is φ = 114051408.

The previous prime is 228102781. The next prime is 228102827. The reversal of 228102818 is 818201822.

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., 228100609 + 2209 = 15103^2 + 47^2 .

It is a super-2 number, since 2×228102818² = 104061791159082248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57025703 + ... + 57025706.

Almost surely, 2^228102818 is an apocalyptic number.

228102818 is a deficient number, since it is larger than the sum of its proper divisors (114051412).

228102818 is a wasteful number, since it uses less digits than its factorization.

228102818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114051411.

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 228102818 is about 15103.0731309889. The cubic root of 228102818 is about 611.0032920553.

The spelling of 228102818 in words is "two hundred twenty-eight million, one hundred two thousand, eight hundred eighteen".