20271716 has 12 divisors (see below), whose sum is σ = 35925120. Its totient is φ = 10007400.

The previous prime is 20271697. The next prime is 20271733. The reversal of 20271716 is 61717202.

It is an unprimeable number.

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, 31760 + ... + 32391.

It is an arithmetic number, because the mean of its divisors is an integer number (2993760).

Almost surely, 2^20271716 is an apocalyptic number.

It is an amenable number.

20271716 is a deficient number, since it is larger than the sum of its proper divisors (15653404).

20271716 is a wasteful number, since it uses less digits than its factorization.

20271716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64234 (or 64232 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 20271716 is about 4502.4122423430. The cubic root of 20271716 is about 272.6654876740.

Adding to 20271716 its reverse (61717202), we get a palindrome (81988918).

The spelling of 20271716 in words is "twenty million, two hundred seventy-one thousand, seven hundred sixteen".