20546245 has 16 divisors (see below), whose sum is σ = 26220672. Its totient is φ = 15421120.

The previous prime is 20546237. The next prime is 20546257. The reversal of 20546245 is 54264502.

It is not a de Polignac number, because 20546245 - 2³ = 20546237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 4410 + ... + 7780.

It is an arithmetic number, because the mean of its divisors is an integer number (1638792).

Almost surely, 2^20546245 is an apocalyptic number.

It is an amenable number.

20546245 is a deficient number, since it is larger than the sum of its proper divisors (5674427).

20546245 is a wasteful number, since it uses less digits than its factorization.

20546245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 20546245 is about 4532.7965981279. The cubic root of 20546245 is about 273.8908270913.

The spelling of 20546245 in words is "twenty million, five hundred forty-six thousand, two hundred forty-five".