20144427 has 8 divisors (see below), whose sum is σ = 28272960. Its totient is φ = 12722760.

The previous prime is 20144417. The next prime is 20144437. The reversal of 20144427 is 72444102.

It is an interprime number because it is at equal distance from previous prime (20144417) and next prime (20144437).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20144427 - 2¹² = 20140331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20144397 and 20144406.

It is not an unprimeable number, because it can be changed into a prime (20144417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176649 + ... + 176762.

It is an arithmetic number, because the mean of its divisors is an integer number (3534120).

Almost surely, 2^20144427 is an apocalyptic number.

20144427 is a deficient number, since it is larger than the sum of its proper divisors (8128533).

20144427 is a wasteful number, since it uses less digits than its factorization.

20144427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353433.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 20144427 is about 4488.2543377130. The cubic root of 20144427 is about 272.0935871369.

Adding to 20144427 its reverse (72444102), we get a palindrome (92588529).

It can be divided in two parts, 2014 and 4427, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 20144427 in words is "twenty million, one hundred forty-four thousand, four hundred twenty-seven".