20648312 has 16 divisors (see below), whose sum is σ = 38790360. Its totient is φ = 10304224.

The previous prime is 20648279. The next prime is 20648321. The reversal of 20648312 is 21384602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2498 + ... + 6894.

Almost surely, 2^20648312 is an apocalyptic number.

It is an amenable number.

20648312 is a deficient number, since it is larger than the sum of its proper divisors (18142048).

20648312 is a wasteful number, since it uses less digits than its factorization.

20648312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990 (or 4986 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 20648312 is about 4544.0413730511. The cubic root of 20648312 is about 274.3436113933.

The spelling of 20648312 in words is "twenty million, six hundred forty-eight thousand, three hundred twelve".