13770228 has 24 divisors (see below), whose sum is σ = 32277280. Its totient is φ = 4569120.

The previous prime is 13770199. The next prime is 13770233. The reversal of 13770228 is 82207731.

It is a junction number, because it is equal to n+sod(n) for n = 13770195 and 13770204.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 243 + ... + 5253.

Almost surely, 2^13770228 is an apocalyptic number.

It is an amenable number.

13770228 is an abundant number, since it is smaller than the sum of its proper divisors (18507052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13770228 is a wasteful number, since it uses less digits than its factorization.

13770228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5247 (or 5245 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 13770228 is about 3710.8257841079. The cubic root of 13770228 is about 239.6884150980.

Adding to 13770228 its reverse (82207731), we get a palindrome (95977959).

The spelling of 13770228 in words is "thirteen million, seven hundred seventy thousand, two hundred twenty-eight".