20448648 has 48 divisors (see below), whose sum is σ = 60418800. Its totient is φ = 6196320.

The previous prime is 20448599. The next prime is 20448661. The reversal of 20448648 is 84684402.

20448648 is a `hidden beast` number, since 2 + 0 + 4 + 4 + 8 + 648 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12118 + ... + 13701.

It is an arithmetic number, because the mean of its divisors is an integer number (1258725).

Almost surely, 2^20448648 is an apocalyptic number.

It is an amenable number.

20448648 is an abundant number, since it is smaller than the sum of its proper divisors (39970152).

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

20448648 is a wasteful number, since it uses less digits than its factorization.

20448648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25842 (or 25835 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 20448648 is about 4522.0181335329. The cubic root of 20448648 is about 273.4564677542.

The spelling of 20448648 in words is "twenty million, four hundred forty-eight thousand, six hundred forty-eight".