20024005 has 16 divisors (see below), whose sum is σ = 25502400. Its totient is φ = 15050880.

The previous prime is 20023987. The next prime is 20024009. The reversal of 20024005 is 50042002.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20024005 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20024009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11641 + ... + 13249.

It is an arithmetic number, because the mean of its divisors is an integer number (1593900).

Almost surely, 2^20024005 is an apocalyptic number.

It is an amenable number.

20024005 is a deficient number, since it is larger than the sum of its proper divisors (5478395).

20024005 is a wasteful number, since it uses less digits than its factorization.

20024005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764.

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 20024005 is about 4474.8189907526. The cubic root of 20024005 is about 271.5503175645.

Adding to 20024005 its reverse (50042002), we get a palindrome (70066007).

It can be divided in two parts, 2002 and 4005, that multiplied together give a triangular number (8018010 = T₄₀₀₄).

The spelling of 20024005 in words is "twenty million, twenty-four thousand, five".