20720714 has 16 divisors (see below), whose sum is σ = 35685888. Its totient is φ = 8839152.

The previous prime is 20720681. The next prime is 20720717. The reversal of 20720714 is 41702702.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20720714.

It is not an unprimeable number, because it can be changed into a prime (20720717) 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 7 ways as a sum of consecutive naturals, for example, 197 + ... + 6440.

It is an arithmetic number, because the mean of its divisors is an integer number (2230368).

Almost surely, 2^20720714 is an apocalyptic number.

20720714 is a deficient number, since it is larger than the sum of its proper divisors (14965174).

20720714 is a wasteful number, since it uses less digits than its factorization.

20720714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6869.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 20720714 is about 4552.0010984181. The cubic root of 20720714 is about 274.6638935084.

It can be divided in two parts, 20720 and 714, that multiplied together give a triangular number (14794080 = T₅₄₃₉).

The spelling of 20720714 in words is "twenty million, seven hundred twenty thousand, seven hundred fourteen".