20650456 has 16 divisors (see below), whose sum is σ = 38789640. Its totient is φ = 10306560.

The previous prime is 20650451. The next prime is 20650457. The reversal of 20650456 is 65405602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650451) by changing a digit.

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, 3115 + ... + 7141.

Almost surely, 2^20650456 is an apocalyptic number.

It is an amenable number.

20650456 is a deficient number, since it is larger than the sum of its proper divisors (18139184).

20650456 is a wasteful number, since it uses less digits than its factorization.

20650456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674 (or 4670 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 20650456 is about 4544.2772802724. The cubic root of 20650456 is about 274.3531064769.

The spelling of 20650456 in words is "twenty million, six hundred fifty thousand, four hundred fifty-six".