20144005 has 16 divisors (see below), whose sum is σ = 27748224. Its totient is φ = 13752000.

The previous prime is 20143999. The next prime is 20144023. The reversal of 20144005 is 50044102.

It is not a de Polignac number, because 20144005 - 2¹⁷ = 20012933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20144005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7639 + ... + 9931.

It is an arithmetic number, because the mean of its divisors is an integer number (1734264).

Almost surely, 2^20144005 is an apocalyptic number.

It is an amenable number.

20144005 is a deficient number, since it is larger than the sum of its proper divisors (7604219).

20144005 is a wasteful number, since it uses less digits than its factorization.

20144005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20144005 is about 4488.2073258708. The cubic root of 20144005 is about 272.0916871193.

Adding to 20144005 its reverse (50044102), we get a palindrome (70188107).

The spelling of 20144005 in words is "twenty million, one hundred forty-four thousand, five".