20127444 has 12 divisors (see below), whose sum is σ = 46964064. Its totient is φ = 6709144.

The previous prime is 20127431. The next prime is 20127451. The reversal of 20127444 is 44472102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×20127444² = 810228003946272, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 838632 + ... + 838655.

It is an arithmetic number, because the mean of its divisors is an integer number (3913672).

Almost surely, 2^20127444 is an apocalyptic number.

It is an amenable number.

20127444 is an abundant number, since it is smaller than the sum of its proper divisors (26836620).

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

20127444 is a wasteful number, since it uses less digits than its factorization.

20127444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677294 (or 1677292 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 20127444 is about 4486.3620005523. The cubic root of 20127444 is about 272.0171017217.

Adding to 20127444 its reverse (44472102), we get a palindrome (64599546).

The spelling of 20127444 in words is "twenty million, one hundred twenty-seven thousand, four hundred forty-four".