20448486 has 24 divisors (see below), whose sum is σ = 44449704. Its totient is φ = 6793920.

The previous prime is 20448469. The next prime is 20448511. The reversal of 20448486 is 68484402.

It is a self number, because there is not a number n which added to its sum of digits gives 20448486.

It is a congruent number.

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, 4381 + ... + 7751.

It is an arithmetic number, because the mean of its divisors is an integer number (1852071).

Almost surely, 2^20448486 is an apocalyptic number.

20448486 is an abundant number, since it is smaller than the sum of its proper divisors (24001218).

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

20448486 is a wasteful number, since it uses less digits than its factorization.

20448486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716 (or 3713 counting only the distinct ones).

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

The square root of 20448486 is about 4522.0002211411. Note that the first 3 decimals coincide. The cubic root of 20448486 is about 273.4557456190.

The spelling of 20448486 in words is "twenty million, four hundred forty-eight thousand, four hundred eighty-six".