1622020 has 12 divisors (see below), whose sum is σ = 3406284. Its totient is φ = 648800.

The previous prime is 1622009. The next prime is 1622039. The reversal of 1622020 is 202261.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 906304 + 715716 = 952^2 + 846^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40531 + ... + 40570.

It is an arithmetic number, because the mean of its divisors is an integer number (283857).

2^1622020 is an apocalyptic number.

1622020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1622020 is an abundant number, since it is smaller than the sum of its proper divisors (1784264).

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

1622020 is a wasteful number, since it uses less digits than its factorization.

1622020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81110 (or 81108 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1622020 is about 1273.5854898671. The cubic root of 1622020 is about 117.4948239760.

Adding to 1622020 its reverse (202261), we get a palindrome (1824281).

The spelling of 1622020 in words is "one million, six hundred twenty-two thousand, twenty".