20044513 has 8 divisors (see below), whose sum is σ = 21676032. Its totient is φ = 18463296.

The previous prime is 20044511. The next prime is 20044529. The reversal of 20044513 is 31544002.

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 20044513 - 2¹ = 20044511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20044511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11745 + ... + 13342.

It is an arithmetic number, because the mean of its divisors is an integer number (2709504).

Almost surely, 2^20044513 is an apocalyptic number.

It is an amenable number.

20044513 is a deficient number, since it is larger than the sum of its proper divisors (1631519).

20044513 is a wasteful number, since it uses less digits than its factorization.

20044513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25151.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20044513 is about 4477.1098936702. The cubic root of 20044513 is about 271.6429905638.

Adding to 20044513 its reverse (31544002), we get a palindrome (51588515).

The spelling of 20044513 in words is "twenty million, forty-four thousand, five hundred thirteen".