20620366 has 12 divisors (see below), whose sum is σ = 33493392. Its totient is φ = 9516936.

The previous prime is 20620361. The next prime is 20620373. The reversal of 20620366 is 66302602.

It is a self number, because there is not a number n which added to its sum of digits gives 20620366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20620361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30166 + ... + 30841.

It is an arithmetic number, because the mean of its divisors is an integer number (2791116).

Almost surely, 2^20620366 is an apocalyptic number.

20620366 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20620366 is a deficient number, since it is larger than the sum of its proper divisors (12873026).

20620366 is a wasteful number, since it uses less digits than its factorization.

20620366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61035 (or 61022 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 20620366 is about 4540.9653158772. The cubic root of 20620366 is about 274.2197874218.

Adding to 20620366 its reverse (66302602), we get a palindrome (86922968).

The spelling of 20620366 in words is "twenty million, six hundred twenty thousand, three hundred sixty-six".