2021652 has 24 divisors (see below), whose sum is σ = 5241600. Its totient is φ = 673848.

The previous prime is 2021651. The next prime is 2021653. The reversal of 2021652 is 2561202.

It is an interprime number because it is at equal distance from previous prime (2021651) and next prime (2021653).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9252 + ... + 9467.

It is an arithmetic number, because the mean of its divisors is an integer number (218400).

2^2021652 is an apocalyptic number.

It is an amenable number.

2021652 is an abundant number, since it is smaller than the sum of its proper divisors (3219948).

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

2021652 is a wasteful number, since it uses less digits than its factorization.

2021652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18732 (or 18724 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2021652 is about 1421.8480931520. The cubic root of 2021652 is about 126.4451375674.

Adding to 2021652 its reverse (2561202), we get a palindrome (4582854).

The spelling of 2021652 in words is "two million, twenty-one thousand, six hundred fifty-two".