20075481 has 24 divisors (see below), whose sum is σ = 30453696. Its totient is φ = 12719520.

The previous prime is 20075477. The next prime is 20075501. The reversal of 20075481 is 18457002.

It is not a de Polignac number, because 20075481 - 2² = 20075477 is a prime.

It is a super-2 number, since 2×20075481² = 806049874762722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20075441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60486 + ... + 60816.

It is an arithmetic number, because the mean of its divisors is an integer number (1268904).

Almost surely, 2^20075481 is an apocalyptic number.

It is an amenable number.

20075481 is a deficient number, since it is larger than the sum of its proper divisors (10378215).

20075481 is a wasteful number, since it uses less digits than its factorization.

20075481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 20075481 is about 4480.5670400073. The cubic root of 20075481 is about 271.7828112328.

The spelling of 20075481 in words is "twenty million, seventy-five thousand, four hundred eighty-one".