20448406 has 16 divisors (see below), whose sum is σ = 34541568. Its totient is φ = 8994600.

The previous prime is 20448401. The next prime is 20448409. The reversal of 20448406 is 60484402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20448401) 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, 14310 + ... + 15673.

It is an arithmetic number, because the mean of its divisors is an integer number (2158848).

Almost surely, 2^20448406 is an apocalyptic number.

20448406 is a deficient number, since it is larger than the sum of its proper divisors (14093162).

20448406 is a wasteful number, since it uses less digits than its factorization.

20448406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30027.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 20448406 is about 4521.9913754893. The cubic root of 20448406 is about 273.4553890076.

The spelling of 20448406 in words is "twenty million, four hundred forty-eight thousand, four hundred six".