20448012 has 96 divisors (see below), whose sum is σ = 55319040. Its totient is φ = 5829120.

The previous prime is 20448007. The next prime is 20448019. The reversal of 20448012 is 21084402.

It is a self number, because there is not a number n which added to its sum of digits gives 20448012.

It is not an unprimeable number, because it can be changed into a prime (20448019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147039 + ... + 147177.

It is an arithmetic number, because the mean of its divisors is an integer number (576240).

Almost surely, 2^20448012 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 20448012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27659520).

20448012 is an abundant number, since it is smaller than the sum of its proper divisors (34871028).

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

20448012 is a wasteful number, since it uses less digits than its factorization.

20448012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 20448012 is about 4521.9478104021. The cubic root of 20448012 is about 273.4536326830.

The spelling of 20448012 in words is "twenty million, four hundred forty-eight thousand, twelve".