20106444 has 24 divisors (see below), whose sum is σ = 49675248. Its totient is φ = 6307840.

The previous prime is 20106421. The next prime is 20106469. The reversal of 20106444 is 44460102.

It is a self number, because there is not a number n which added to its sum of digits gives 20106444.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49077 + ... + 49484.

It is an arithmetic number, because the mean of its divisors is an integer number (2069802).

Almost surely, 2^20106444 is an apocalyptic number.

It is an amenable number.

20106444 is an abundant number, since it is smaller than the sum of its proper divisors (29568804).

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

20106444 is a wasteful number, since it uses less digits than its factorization.

20106444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98585 (or 98583 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 20106444 is about 4484.0209633765. The cubic root of 20106444 is about 271.9224656458.

Adding to 20106444 its reverse (44460102), we get a palindrome (64566546).

The spelling of 20106444 in words is "twenty million, one hundred six thousand, four hundred forty-four".