20048665 has 32 divisors (see below), whose sum is σ = 29917440. Its totient is φ = 12559104.

The previous prime is 20048659. The next prime is 20048669. The reversal of 20048665 is 56684002.

It is a cyclic number.

It is not a de Polignac number, because 20048665 - 2⁹ = 20048153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20048669) 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 31 ways as a sum of consecutive naturals, for example, 63087 + ... + 63403.

It is an arithmetic number, because the mean of its divisors is an integer number (934920).

Almost surely, 2^20048665 is an apocalyptic number.

It is an amenable number.

20048665 is a deficient number, since it is larger than the sum of its proper divisors (9868775).

20048665 is a wasteful number, since it uses less digits than its factorization.

20048665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 20048665 is about 4477.5735616514. The cubic root of 20048665 is about 271.6617452197.

The spelling of 20048665 in words is "twenty million, forty-eight thousand, six hundred sixty-five".