20715652 has 12 divisors (see below), whose sum is σ = 36294300. Its totient is φ = 10345856.

The previous prime is 20715649. The next prime is 20715659. The reversal of 20715652 is 25651702.

It can be written as a sum of positive squares in 2 ways, for example, as 14485636 + 6230016 = 3806^2 + 2496^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20715652.

It is not an unprimeable number, because it can be changed into a prime (20715659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1728 + ... + 6664.

It is an arithmetic number, because the mean of its divisors is an integer number (3024525).

Almost surely, 2^20715652 is an apocalyptic number.

It is an amenable number.

20715652 is a deficient number, since it is larger than the sum of its proper divisors (15578648).

20715652 is a wasteful number, since it uses less digits than its factorization.

20715652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5990 (or 5988 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 20715652 is about 4551.4450452576. The cubic root of 20715652 is about 274.6415252016.

The spelling of 20715652 in words is "twenty million, seven hundred fifteen thousand, six hundred fifty-two".