20546218 has 16 divisors (see below), whose sum is σ = 38424384. Its totient is φ = 8004960.

The previous prime is 20546213. The next prime is 20546221. The reversal of 20546218 is 81264502.

It is not an unprimeable number, because it can be changed into a prime (20546213) 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 7 ways as a sum of consecutive naturals, for example, 66555 + ... + 66862.

It is an arithmetic number, because the mean of its divisors is an integer number (2401524).

Almost surely, 2^20546218 is an apocalyptic number.

20546218 is a deficient number, since it is larger than the sum of its proper divisors (17878166).

20546218 is a wasteful number, since it uses less digits than its factorization.

20546218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133437.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20546218 is about 4532.7936198331. The cubic root of 20546218 is about 273.8907071171.

The spelling of 20546218 in words is "twenty million, five hundred forty-six thousand, two hundred eighteen".