20875012 has 12 divisors (see below), whose sum is σ = 37791180. Its totient is φ = 10077536.

The previous prime is 20875009. The next prime is 20875013. The reversal of 20875012 is 21057802.

It can be written as a sum of positive squares in 2 ways, for example, as 7214596 + 13660416 = 2686^2 + 3696^2 .

It is a super-2 number, since 2×20875012² = 871532252000288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20875013) 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 3 ways as a sum of consecutive naturals, for example, 89863 + ... + 90094.

It is an arithmetic number, because the mean of its divisors is an integer number (3149265).

Almost surely, 2^20875012 is an apocalyptic number.

It is an amenable number.

20875012 is a deficient number, since it is larger than the sum of its proper divisors (16916168).

20875012 is a wasteful number, since it uses less digits than its factorization.

20875012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179990 (or 179988 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 20875012 is about 4568.9180338456. The cubic root of 20875012 is about 275.3439750799.

The spelling of 20875012 in words is "twenty million, eight hundred seventy-five thousand, twelve".