20030144 has 14 divisors (see below), whose sum is σ = 39747444. Its totient is φ = 10015040.

The previous prime is 20030137. The next prime is 20030159. The reversal of 20030144 is 44103002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156422 + ... + 156549.

Almost surely, 2^20030144 is an apocalyptic number.

It is an amenable number.

20030144 is a deficient number, since it is larger than the sum of its proper divisors (19717300).

20030144 is an equidigital number, since it uses as much as digits as its factorization.

20030144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312983 (or 312973 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20030144 is about 4475.5048877194. The cubic root of 20030144 is about 271.5780655444.

Adding to 20030144 its reverse (44103002), we get a palindrome (64133146).

The spelling of 20030144 in words is "twenty million, thirty thousand, one hundred forty-four".