20040448 has 18 divisors (see below), whose sum is σ = 40003124. Its totient is φ = 10020096.

The previous prime is 20040443. The next prime is 20040463. The reversal of 20040448 is 84404002.

It is not an unprimeable number, because it can be changed into a prime (20040443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38886 + ... + 39397.

Almost surely, 2^20040448 is an apocalyptic number.

It is an amenable number.

20040448 is a deficient number, since it is larger than the sum of its proper divisors (19962676).

20040448 is an frugal number, since it uses more digits than its factorization.

20040448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78299 (or 78285 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 20040448 is about 4476.6558947500. The cubic root of 20040448 is about 271.6246263792.

The spelling of 20040448 in words is "twenty million, forty thousand, four hundred forty-eight".