20071716 has 24 divisors (see below), whose sum is σ = 53524800. Its totient is φ = 5734752.

The previous prime is 20071699. The next prime is 20071721. The reversal of 20071716 is 61717002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119391 + ... + 119558.

It is an arithmetic number, because the mean of its divisors is an integer number (2230200).

Almost surely, 2^20071716 is an apocalyptic number.

It is an amenable number.

20071716 is an abundant number, since it is smaller than the sum of its proper divisors (33453084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20071716 is a wasteful number, since it uses less digits than its factorization.

20071716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238963 (or 238961 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 20071716 is about 4480.1468725925. The cubic root of 20071716 is about 271.7658199212.

Adding to 20071716 its reverse (61717002), we get a palindrome (81788718).

The spelling of 20071716 in words is "twenty million, seventy-one thousand, seven hundred sixteen".