20144799 has 6 divisors (see below), whose sum is σ = 29098056. Its totient is φ = 13429860.

The previous prime is 20144797. The next prime is 20144809. The reversal of 20144799 is 99744102.

20144799 is a `hidden beast` number, since 201 + 447 + 9 + 9 = 666.

It is not a de Polignac number, because 20144799 - 2¹ = 20144797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1119147 + ... + 1119164.

It is an arithmetic number, because the mean of its divisors is an integer number (4849676).

Almost surely, 2^20144799 is an apocalyptic number.

20144799 is a deficient number, since it is larger than the sum of its proper divisors (8953257).

20144799 is a wasteful number, since it uses less digits than its factorization.

20144799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238317 (or 2238314 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 20144799 is about 4488.2957790235. The cubic root of 20144799 is about 272.0952620119.

The spelling of 20144799 in words is "twenty million, one hundred forty-four thousand, seven hundred ninety-nine".