20048709 has 16 divisors (see below), whose sum is σ = 28651392. Its totient is φ = 12437568.

The previous prime is 20048701. The next prime is 20048711. The reversal of 20048709 is 90784002.

It is not a de Polignac number, because 20048709 - 2³ = 20048701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20048701) 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 15 ways as a sum of consecutive naturals, for example, 1374 + ... + 6479.

It is an arithmetic number, because the mean of its divisors is an integer number (1790712).

Almost surely, 2^20048709 is an apocalyptic number.

It is an amenable number.

20048709 is a deficient number, since it is larger than the sum of its proper divisors (8602683).

20048709 is a wasteful number, since it uses less digits than its factorization.

20048709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7916.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20048709 is about 4477.5784750242. The cubic root of 20048709 is about 271.6619439546.

The spelling of 20048709 in words is "twenty million, forty-eight thousand, seven hundred nine".