20620716 has 12 divisors (see below), whose sum is σ = 48115032. Its totient is φ = 6873568.

The previous prime is 20620709. The next prime is 20620751. The reversal of 20620716 is 61702602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 859185 + ... + 859208.

It is an arithmetic number, because the mean of its divisors is an integer number (4009586).

Almost surely, 2^20620716 is an apocalyptic number.

It is an amenable number.

20620716 is an abundant number, since it is smaller than the sum of its proper divisors (27494316).

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

20620716 is a wasteful number, since it uses less digits than its factorization.

20620716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718400 (or 1718398 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 20620716 is about 4541.0038537751. The cubic root of 20620716 is about 274.2213389038.

The spelling of 20620716 in words is "twenty million, six hundred twenty thousand, seven hundred sixteen".