20548112 has 40 divisors (see below), whose sum is σ = 43163904. Its totient is φ = 9419904.

The previous prime is 20548097. The next prime is 20548117. The reversal of 20548112 is 21184502.

It is not an unprimeable number, because it can be changed into a prime (20548117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46163 + ... + 46605.

Almost surely, 2^20548112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20548112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21581952).

20548112 is an abundant number, since it is smaller than the sum of its proper divisors (22615792).

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

20548112 is a wasteful number, since it uses less digits than its factorization.

20548112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 20548112 is about 4533.0025369505. The cubic root of 20548112 is about 273.8991228275.

Subtracting from 20548112 its sum of digits (23), we obtain a square (20548089 = 4533²).

The spelling of 20548112 in words is "twenty million, five hundred forty-eight thousand, one hundred twelve".