20134144 has 18 divisors (see below), whose sum is σ = 40190150. Its totient is φ = 10066944.

The previous prime is 20134139. The next prime is 20134183. The reversal of 20134144 is 44143102.

It can be written as a sum of positive squares in only one way, i.e., 15116544 + 5017600 = 3888^2 + 2240^2 .

It is a super-2 number, since 2×20134144² = 810767509225472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39069 + ... + 39580.

Almost surely, 2^20134144 is an apocalyptic number.

It is an amenable number.

20134144 is a deficient number, since it is larger than the sum of its proper divisors (20056006).

20134144 is an frugal number, since it uses more digits than its factorization.

20134144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78665 (or 78651 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20134144 is about 4487.1086458877. The cubic root of 20134144 is about 272.0472812847.

Adding to 20134144 its reverse (44143102), we get a palindrome (64277246).

The spelling of 20134144 in words is "twenty million, one hundred thirty-four thousand, one hundred forty-four".