20854393 has 16 divisors (see below), whose sum is σ = 26110080. Its totient is φ = 16240896.

The previous prime is 20854369. The next prime is 20854397. The reversal of 20854393 is 39345802.

It is a happy number.

It is not a de Polignac number, because 20854393 - 2⁹ = 20853881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20854397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430 + ... + 6472.

It is an arithmetic number, because the mean of its divisors is an integer number (1631880).

Almost surely, 2^20854393 is an apocalyptic number.

It is an amenable number.

20854393 is a deficient number, since it is larger than the sum of its proper divisors (5255687).

20854393 is a wasteful number, since it uses less digits than its factorization.

20854393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6096.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 20854393 is about 4566.6610340598. The cubic root of 20854393 is about 275.2532895004.

The spelling of 20854393 in words is "twenty million, eight hundred fifty-four thousand, three hundred ninety-three".