20448856 has 8 divisors (see below), whose sum is σ = 38341620. Its totient is φ = 10224424.

The previous prime is 20448853. The next prime is 20448859. The reversal of 20448856 is 65884402.

It is an interprime number because it is at equal distance from previous prime (20448853) and next prime (20448859).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20448853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278046 + ... + 1278061.

Almost surely, 2^20448856 is an apocalyptic number.

It is an amenable number.

20448856 is a deficient number, since it is larger than the sum of its proper divisors (17892764).

20448856 is a wasteful number, since it uses less digits than its factorization.

20448856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556113 (or 2556109 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 20448856 is about 4522.0411320553. The cubic root of 20448856 is about 273.4573949345.

The spelling of 20448856 in words is "twenty million, four hundred forty-eight thousand, eight hundred fifty-six".