20481127 has 4 divisors (see below), whose sum is σ = 20495736. Its totient is φ = 20466520.

The previous prime is 20481079. The next prime is 20481193. The reversal of 20481127 is 72118402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20481127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401127) 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, 4948 + ... + 8089.

It is an arithmetic number, because the mean of its divisors is an integer number (5123934).

Almost surely, 2^20481127 is an apocalyptic number.

20481127 is a deficient number, since it is larger than the sum of its proper divisors (14609).

20481127 is a wasteful number, since it uses less digits than its factorization.

20481127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14608.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 20481127 is about 4525.6079149657. The cubic root of 20481127 is about 273.6011699775.

Adding to 20481127 its reverse (72118402), we get a palindrome (92599529).

The spelling of 20481127 in words is "twenty million, four hundred eighty-one thousand, one hundred twenty-seven".