1770228 has 48 divisors (see below), whose sum is σ = 4724160. Its totient is φ = 572832.

The previous prime is 1770221. The next prime is 1770233. The reversal of 1770228 is 8220771.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1770221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3775 + ... + 4217.

It is an arithmetic number, because the mean of its divisors is an integer number (98420).

2^1770228 is an apocalyptic number.

1770228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1770228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2362080).

1770228 is an abundant number, since it is smaller than the sum of its proper divisors (2953932).

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

1770228 is a wasteful number, since it uses less digits than its factorization.

1770228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 1770228 is about 1330.4991544529. The cubic root of 1770228 is about 120.9696438204.

Adding to 1770228 its reverse (8220771), we get a palindrome (9990999).

The spelling of 1770228 in words is "one million, seven hundred seventy thousand, two hundred twenty-eight".