20935044 has 144 divisors (see below), whose sum is σ = 62307840. Its totient is φ = 6065280.

The previous prime is 20935043. The next prime is 20935049. The reversal of 20935044 is 44053902.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 20934999 and 20935017.

It is not an unprimeable number, because it can be changed into a prime (20935043) 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 47 ways as a sum of consecutive naturals, for example, 565794 + ... + 565830.

Almost surely, 2^20935044 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 20935044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31153920).

20935044 is an abundant number, since it is smaller than the sum of its proper divisors (41372796).

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

20935044 is a wasteful number, since it uses less digits than its factorization.

20935044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20935044 is about 4575.4829253315. The cubic root of 20935044 is about 275.6076656228.

Adding to 20935044 its reverse (44053902), we get a palindrome (64988946).

It can be divided in two parts, 209 and 35044, that added together give a palindrome (35253).

The spelling of 20935044 in words is "twenty million, nine hundred thirty-five thousand, forty-four".