20106648 has 48 divisors (see below), whose sum is σ = 57662280. Its totient is φ = 6307584.

The previous prime is 20106643. The next prime is 20106649. The reversal of 20106648 is 84660102.

20106648 is a `hidden beast` number, since 2 + 0 + 10 + 6 + 648 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20106641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6990 + ... + 9437.

Almost surely, 2^20106648 is an apocalyptic number.

It is an amenable number.

20106648 is an abundant number, since it is smaller than the sum of its proper divisors (37555632).

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

20106648 is a wasteful number, since it uses less digits than its factorization.

20106648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16456 (or 16449 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20106648 is about 4484.0437107593. The cubic root of 20106648 is about 271.9233852846.

The spelling of 20106648 in words is "twenty million, one hundred six thousand, six hundred forty-eight".