101818228 has 12 divisors (see below), whose sum is σ = 182997892. Its totient is φ = 49533120.

The previous prime is 101818177. The next prime is 101818231. The reversal of 101818228 is 822818101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 83942244 + 17875984 = 9162^2 + 4228^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 101818228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343833 + ... + 344128.

Almost surely, 2^101818228 is an apocalyptic number.

It is an amenable number.

101818228 is a deficient number, since it is larger than the sum of its proper divisors (81179664).

101818228 is a wasteful number, since it uses less digits than its factorization.

101818228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688002 (or 688000 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 31.

The square root of 101818228 is about 10090.5018705712. The cubic root of 101818228 is about 466.9551592593.

The spelling of 101818228 in words is "one hundred one million, eight hundred eighteen thousand, two hundred twenty-eight".