20448386 has 12 divisors (see below), whose sum is σ = 35680518. Its totient is φ = 8763552.

The previous prime is 20448377. The next prime is 20448401. The reversal of 20448386 is 68384402.

It can be written as a sum of positive squares in only one way, i.e., 13920361 + 6528025 = 3731^2 + 2555^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104231 + ... + 104426.

Almost surely, 2^20448386 is an apocalyptic number.

20448386 is a deficient number, since it is larger than the sum of its proper divisors (15232132).

20448386 is a wasteful number, since it uses less digits than its factorization.

20448386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208673 (or 208666 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 20448386 is about 4521.9891640737. The cubic root of 20448386 is about 273.4552998546.

The spelling of 20448386 in words is "twenty million, four hundred forty-eight thousand, three hundred eighty-six".