2021746 has 8 divisors (see below), whose sum is σ = 3164544. Its totient is φ = 966900.

The previous prime is 2021743. The next prime is 2021777. The reversal of 2021746 is 6471202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2021743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21930 + ... + 22021.

It is an arithmetic number, because the mean of its divisors is an integer number (395568).

2^2021746 is an apocalyptic number.

2021746 is a deficient number, since it is larger than the sum of its proper divisors (1142798).

2021746 is a wasteful number, since it uses less digits than its factorization.

2021746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43976.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 2021746 is about 1421.8811483384. The cubic root of 2021746 is about 126.4470972945.

Adding to 2021746 its reverse (6471202), we get a palindrome (8492948).

The spelling of 2021746 in words is "two million, twenty-one thousand, seven hundred forty-six".