20213044 has 12 divisors (see below), whose sum is σ = 36910944. Its totient is φ = 9667064.

The previous prime is 20212991. The next prime is 20213047. The reversal of 20213044 is 44031202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109762 + ... + 109945.

It is an arithmetic number, because the mean of its divisors is an integer number (3075912).

Almost surely, 2^20213044 is an apocalyptic number.

It is an amenable number.

20213044 is a deficient number, since it is larger than the sum of its proper divisors (16697900).

20213044 is a wasteful number, since it uses less digits than its factorization.

20213044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219734 (or 219732 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20213044 is about 4495.8919026151. The cubic root of 20213044 is about 272.4021768223.

Adding to 20213044 its reverse (44031202), we get a palindrome (64244246).

The spelling of 20213044 in words is "twenty million, two hundred thirteen thousand, forty-four".