1682840 has 16 divisors (see below), whose sum is σ = 3786480. Its totient is φ = 673120.

The previous prime is 1682833. The next prime is 1682843. The reversal of 1682840 is 482861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1682843) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20996 + ... + 21075.

It is an arithmetic number, because the mean of its divisors is an integer number (236655).

2^1682840 is an apocalyptic number.

1682840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1682840 is an abundant number, since it is smaller than the sum of its proper divisors (2103640).

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

1682840 is a wasteful number, since it uses less digits than its factorization.

1682840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42082 (or 42078 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1682840 is about 1297.2432308553. The cubic root of 1682840 is about 118.9453884009.

The spelling of 1682840 in words is "one million, six hundred eighty-two thousand, eight hundred forty".