20130144 has 48 divisors (see below), whose sum is σ = 53102448. Its totient is φ = 6676992.

The previous prime is 20130079. The next prime is 20130163. The reversal of 20130144 is 44103102.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 26214 + ... + 26970.

It is an arithmetic number, because the mean of its divisors is an integer number (1106301).

Almost surely, 2^20130144 is an apocalyptic number.

20130144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20130144 is an abundant number, since it is smaller than the sum of its proper divisors (32972304).

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

20130144 is a wasteful number, since it uses less digits than its factorization.

20130144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047 (or 1039 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20130144 is about 4486.6629024254. The cubic root of 20130144 is about 272.0292644407.

Adding to 20130144 its reverse (44103102), we get a palindrome (64233246).

The spelling of 20130144 in words is "twenty million, one hundred thirty thousand, one hundred forty-four".