20144429 has 8 divisors (see below), whose sum is σ = 20559840. Its totient is φ = 19731600.

The previous prime is 20144417. The next prime is 20144437. The reversal of 20144429 is 92444102.

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

It is a cyclic number.

It is not a de Polignac number, because 20144429 - 2²⁴ = 3367213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20144398 and 20144407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144479) 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, 24434 + ... + 25244.

It is an arithmetic number, because the mean of its divisors is an integer number (2569980).

Almost surely, 2^20144429 is an apocalyptic number.

It is an amenable number.

20144429 is a deficient number, since it is larger than the sum of its proper divisors (415411).

20144429 is an equidigital number, since it uses as much as digits as its factorization.

20144429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 20144429 is about 4488.2545605168. The cubic root of 20144429 is about 272.0935961416.

The spelling of 20144429 in words is "twenty million, one hundred forty-four thousand, four hundred twenty-nine".