20046049 has 4 divisors (see below), whose sum is σ = 20071060. Its totient is φ = 20021040.

The previous prime is 20046011. The next prime is 20046053. The reversal of 20046049 is 94064002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13249600 + 6796449 = 3640^2 + 2607^2 .

It is a cyclic number.

It is not a de Polignac number, because 20046049 - 2⁹ = 20045537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20046079) 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 3 ways as a sum of consecutive naturals, for example, 11262 + ... + 12919.

It is an arithmetic number, because the mean of its divisors is an integer number (5017765).

Almost surely, 2^20046049 is an apocalyptic number.

It is an amenable number.

20046049 is a deficient number, since it is larger than the sum of its proper divisors (25011).

20046049 is an equidigital number, since it uses as much as digits as its factorization.

20046049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25010.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 20046049 is about 4477.2814296178. The cubic root of 20046049 is about 271.6499290042.

The spelling of 20046049 in words is "twenty million, forty-six thousand, forty-nine".