20101444 has 24 divisors (see below), whose sum is σ = 38497536. Its totient is φ = 9108000.

The previous prime is 20101427. The next prime is 20101483. The reversal of 20101444 is 44410102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19789 + ... + 20779.

It is an arithmetic number, because the mean of its divisors is an integer number (1604064).

Almost surely, 2^20101444 is an apocalyptic number.

It is an amenable number.

20101444 is a deficient number, since it is larger than the sum of its proper divisors (18396092).

20101444 is a wasteful number, since it uses less digits than its factorization.

20101444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1465 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 20101444 is about 4483.4633934047. The cubic root of 20101444 is about 271.8999235354.

Adding to 20101444 its reverse (44410102), we get a palindrome (64511546).

The spelling of 20101444 in words is "twenty million, one hundred one thousand, four hundred forty-four".