20662044 has 48 divisors (see below), whose sum is σ = 54660480. Its totient is φ = 6022080.

The previous prime is 20662039. The next prime is 20662049. The reversal of 20662044 is 44026602.

It is an interprime number because it is at equal distance from previous prime (20662039) and next prime (20662049).

It is a super-3 number, since 3×20662044³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20662049) 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 15 ways as a sum of consecutive naturals, for example, 522 + ... + 6449.

It is an arithmetic number, because the mean of its divisors is an integer number (1138760).

Almost surely, 2^20662044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20662044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27330240).

20662044 is an abundant number, since it is smaller than the sum of its proper divisors (33998436).

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

20662044 is a wasteful number, since it uses less digits than its factorization.

20662044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7010 (or 7008 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 20662044 is about 4545.5521116802. The cubic root of 20662044 is about 274.4044146145.

Adding to 20662044 its reverse (44026602), we get a palindrome (64688646).

The spelling of 20662044 in words is "twenty million, six hundred sixty-two thousand, forty-four".