1641020 has 12 divisors (see below), whose sum is σ = 3446184. Its totient is φ = 656400.

The previous prime is 1641007. The next prime is 1641043. The reversal of 1641020 is 201461.

It is a junction number, because it is equal to n+sod(n) for n = 1640986 and 1641004.

It is a congruent number.

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, 41006 + ... + 41045.

It is an arithmetic number, because the mean of its divisors is an integer number (287182).

2^1641020 is an apocalyptic number.

1641020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1641020 is an abundant number, since it is smaller than the sum of its proper divisors (1805164).

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

1641020 is a wasteful number, since it uses less digits than its factorization.

1641020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82060 (or 82058 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1641020 is about 1281.0230286767. The cubic root of 1641020 is about 117.9518140900.

Adding to 1641020 its reverse (201461), we get a palindrome (1842481).

The spelling of 1641020 in words is "one million, six hundred forty-one thousand, twenty".