1682920 has 16 divisors (see below), whose sum is σ = 3786660. Its totient is φ = 673152.

The previous prime is 1682911. The next prime is 1682939. The reversal of 1682920 is 292861.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1454436 + 228484 = 1206^2 + 478^2 .

It is an Ulam number.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20997 + ... + 21076.

2^1682920 is an apocalyptic number.

1682920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1682920 is an abundant number, since it is smaller than the sum of its proper divisors (2103740).

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

1682920 is a wasteful number, since it uses less digits than its factorization.

1682920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42084 (or 42080 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1682920 is about 1297.2740651073. The cubic root of 1682920 is about 118.9472732068.

The spelling of 1682920 in words is "one million, six hundred eighty-two thousand, nine hundred twenty".