2021622 has 16 divisors (see below), whose sum is σ = 4059072. Its totient is φ = 671240.

The previous prime is 2021609. The next prime is 2021627. The reversal of 2021622 is 2261202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1597 + ... + 2567.

It is an arithmetic number, because the mean of its divisors is an integer number (253692).

2^2021622 is an apocalyptic number.

2021622 is an abundant number, since it is smaller than the sum of its proper divisors (2037450).

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

2021622 is a wasteful number, since it uses less digits than its factorization.

2021622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2021622 is about 1421.8375434627. The cubic root of 2021622 is about 126.4445121098. Note that the first 3 decimals are identical.

Adding to 2021622 its reverse (2261202), we get a palindrome (4282824).

The spelling of 2021622 in words is "two million, twenty-one thousand, six hundred twenty-two".