20200144 has 10 divisors (see below), whose sum is σ = 39137810. Its totient is φ = 10100064.

The previous prime is 20200133. The next prime is 20200157. The reversal of 20200144 is 44100202.

It can be written as a sum of positive squares in only one way, i.e., 15840400 + 4359744 = 3980^2 + 2088^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 631239 + ... + 631270.

It is an arithmetic number, because the mean of its divisors is an integer number (3913781).

Almost surely, 2^20200144 is an apocalyptic number.

It is an amenable number.

20200144 is a deficient number, since it is larger than the sum of its proper divisors (18937666).

20200144 is a wasteful number, since it uses less digits than its factorization.

20200144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262517 (or 1262511 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 20200144 is about 4494.4570306100. The cubic root of 20200144 is about 272.3442153084.

Adding to 20200144 its reverse (44100202), we get a palindrome (64300346).

The spelling of 20200144 in words is "twenty million, two hundred thousand, one hundred forty-four".