20109448 has 16 divisors (see below), whose sum is σ = 39690000. Its totient is φ = 9525456.

The previous prime is 20109431. The next prime is 20109451. The reversal of 20109448 is 84490102.

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, 65998 + ... + 66301.

It is an arithmetic number, because the mean of its divisors is an integer number (2480625).

Almost surely, 2^20109448 is an apocalyptic number.

It is an amenable number.

20109448 is a deficient number, since it is larger than the sum of its proper divisors (19580552).

20109448 is a wasteful number, since it uses less digits than its factorization.

20109448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132324 (or 132320 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 20109448 is about 4484.3559180779. The cubic root of 20109448 is about 271.9360071487.

The spelling of 20109448 in words is "twenty million, one hundred nine thousand, four hundred forty-eight".