20516014 has 4 divisors (see below), whose sum is σ = 30774024. Its totient is φ = 10258006.

The previous prime is 20516009. The next prime is 20516039. The reversal of 20516014 is 41061502.

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

It is a junction number, because it is equal to n+sod(n) for n = 20515982 and 20516000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5129002 + ... + 5129005.

It is an arithmetic number, because the mean of its divisors is an integer number (7693506).

Almost surely, 2^20516014 is an apocalyptic number.

20516014 is a deficient number, since it is larger than the sum of its proper divisors (10258010).

20516014 is a wasteful number, since it uses less digits than its factorization.

20516014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10258009.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 20516014 is about 4529.4606742967. The cubic root of 20516014 is about 273.7564301430.

Adding to 20516014 its reverse (41061502), we get a palindrome (61577516).

The spelling of 20516014 in words is "twenty million, five hundred sixteen thousand, fourteen".