20854207 has 8 divisors (see below), whose sum is σ = 22960080. Its totient is φ = 18783360.

The previous prime is 20854201. The next prime is 20854217. The reversal of 20854207 is 70245802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20854207 - 2⁷ = 20854079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20854201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7498 + ... + 9895.

It is an arithmetic number, because the mean of its divisors is an integer number (2870010).

Almost surely, 2^20854207 is an apocalyptic number.

20854207 is a deficient number, since it is larger than the sum of its proper divisors (2105873).

20854207 is a wasteful number, since it uses less digits than its factorization.

20854207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17513.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 20854207 is about 4566.6406690258. The cubic root of 20854207 is about 275.2524711714.

The spelling of 20854207 in words is "twenty million, eight hundred fifty-four thousand, two hundred seven".