20448880 has 40 divisors (see below), whose sum is σ = 47733552. Its totient is φ = 8146944.

The previous prime is 20448859. The next prime is 20448881. The reversal of 20448880 is 8884402.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20448881) 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, 35152 + ... + 35728.

Almost surely, 2^20448880 is an apocalyptic number.

20448880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20448880 is an abundant number, since it is smaller than the sum of its proper divisors (27284672).

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

20448880 is a wasteful number, since it uses less digits than its factorization.

20448880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033 (or 1027 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 20448880 is about 4522.0437857234. The cubic root of 20448880 is about 273.4575019164.

It can be divided in two parts, 20 and 448880, that added together give a square (448900 = 670²).

The spelling of 20448880 in words is "twenty million, four hundred forty-eight thousand, eight hundred eighty".