20854075 has 12 divisors (see below), whose sum is σ = 28210248. Its totient is φ = 15166400.

The previous prime is 20854073. The next prime is 20854079. The reversal of 20854075 is 57045802.

It is not a de Polignac number, because 20854075 - 2¹ = 20854073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20854073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37642 + ... + 38191.

It is an arithmetic number, because the mean of its divisors is an integer number (2350854).

Almost surely, 2^20854075 is an apocalyptic number.

20854075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20854075 is a deficient number, since it is larger than the sum of its proper divisors (7356173).

20854075 is a wasteful number, since it uses less digits than its factorization.

20854075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75854 (or 75849 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 20854075 is about 4566.6262163659. The cubic root of 20854075 is about 275.2518904188.

Adding to 20854075 its reverse (57045802), we get a palindrome (77899877).

The spelling of 20854075 in words is "twenty million, eight hundred fifty-four thousand, seventy-five".