20441730 has 32 divisors (see below), whose sum is σ = 49896000. Its totient is φ = 5358272.

The previous prime is 20441699. The next prime is 20441747. The reversal of 20441730 is 3714402.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20441697 and 20441706.

It is an unprimeable number.

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, 4005 + ... + 7544.

It is an arithmetic number, because the mean of its divisors is an integer number (1559250).

Almost surely, 2^20441730 is an apocalyptic number.

20441730 is an abundant number, since it is smaller than the sum of its proper divisors (29454270).

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

20441730 is a wasteful number, since it uses less digits than its factorization.

20441730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11618.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20441730 is about 4521.2531448703. The cubic root of 20441730 is about 273.4256265103.

The spelling of 20441730 in words is "twenty million, four hundred forty-one thousand, seven hundred thirty".