1768220 has 12 divisors (see below), whose sum is σ = 3713304. Its totient is φ = 707280.

The previous prime is 1768199. The next prime is 1768223. The reversal of 1768220 is 228671.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 1768220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1768223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 44186 + ... + 44225.

It is an arithmetic number, because the mean of its divisors is an integer number (309442).

2^1768220 is an apocalyptic number.

1768220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1768220 is an abundant number, since it is smaller than the sum of its proper divisors (1945084).

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

1768220 is a wasteful number, since it uses less digits than its factorization.

1768220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88420 (or 88418 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1768220 is about 1329.7443363294. The cubic root of 1768220 is about 120.9238872009.

The spelling of 1768220 in words is "one million, seven hundred sixty-eight thousand, two hundred twenty".