1682220 has 72 divisors (see below), whose sum is σ = 5016816. Its totient is φ = 420992.

The previous prime is 1682207. The next prime is 1682237. The reversal of 1682220 is 222861.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31714 + ... + 31766.

It is an arithmetic number, because the mean of its divisors is an integer number (69678).

2^1682220 is an apocalyptic number.

1682220 is a gapful number since it is divisible by the number (10) 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 1682220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2508408).

1682220 is an abundant number, since it is smaller than the sum of its proper divisors (3334596).

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

1682220 is a wasteful number, since it uses less digits than its factorization.

1682220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1682220 is about 1297.0042405482. The cubic root of 1682220 is about 118.9307791294.

The spelling of 1682220 in words is "one million, six hundred eighty-two thousand, two hundred twenty".