20448308 has 12 divisors (see below), whose sum is σ = 36013572. Its totient is φ = 10158720.

The previous prime is 20448293. The next prime is 20448317. The reversal of 20448308 is 80384402.

It can be written as a sum of positive squares in 2 ways, for example, as 11035684 + 9412624 = 3322^2 + 3068^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15653 + ... + 16908.

It is an arithmetic number, because the mean of its divisors is an integer number (3001131).

Almost surely, 2^20448308 is an apocalyptic number.

It is an amenable number.

20448308 is a deficient number, since it is larger than the sum of its proper divisors (15565264).

20448308 is a wasteful number, since it uses less digits than its factorization.

20448308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32722 (or 32720 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 20448308 is about 4521.9805395424. The cubic root of 20448308 is about 273.4549521574.

The spelling of 20448308 in words is "twenty million, four hundred forty-eight thousand, three hundred eight".