20516127 has 8 divisors (see below), whose sum is σ = 28964016. Its totient is φ = 12872832.

The previous prime is 20516123. The next prime is 20516147. The reversal of 20516127 is 72161502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20516127 - 2² = 20516123 is a prime.

It is a super-2 number, since 2×20516127² = 841822934160258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20516097 and 20516106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20516123) 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 7 ways as a sum of consecutive naturals, for example, 201088 + ... + 201189.

It is an arithmetic number, because the mean of its divisors is an integer number (3620502).

Almost surely, 2^20516127 is an apocalyptic number.

20516127 is a deficient number, since it is larger than the sum of its proper divisors (8447889).

20516127 is a wasteful number, since it uses less digits than its factorization.

20516127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402297.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 20516127 is about 4529.4731481708. The cubic root of 20516127 is about 273.7569327491.

Adding to 20516127 its reverse (72161502), we get a palindrome (92677629).

The spelling of 20516127 in words is "twenty million, five hundred sixteen thousand, one hundred twenty-seven".