20448123 has 24 divisors (see below), whose sum is σ = 29260800. Its totient is φ = 12697776.

The previous prime is 20448119. The next prime is 20448133. The reversal of 20448123 is 32184402.

It is not a de Polignac number, because 20448123 - 2² = 20448119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20448093 and 20448102.

It is not an unprimeable number, because it can be changed into a prime (20448133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85438 + ... + 85676.

It is an arithmetic number, because the mean of its divisors is an integer number (1219200).

Almost surely, 2^20448123 is an apocalyptic number.

20448123 is a deficient number, since it is larger than the sum of its proper divisors (8812677).

20448123 is a wasteful number, since it uses less digits than its factorization.

20448123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 20448123 is about 4521.9600838574. The cubic root of 20448123 is about 273.4541274874.

The spelling of 20448123 in words is "twenty million, four hundred forty-eight thousand, one hundred twenty-three".