20081448 has 24 divisors (see below), whose sum is σ = 54387450. Its totient is φ = 6693792.

The previous prime is 20081447. The next prime is 20081449. The reversal of 20081448 is 84418002.

It is an interprime number because it is at equal distance from previous prime (20081447) and next prime (20081449).

It can be written as a sum of positive squares in only one way, i.e., 16990884 + 3090564 = 4122^2 + 1758^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (20081447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139383 + ... + 139526.

Almost surely, 2^20081448 is an apocalyptic number.

It is an amenable number.

20081448 is an abundant number, since it is smaller than the sum of its proper divisors (34306002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20081448 is a wasteful number, since it uses less digits than its factorization.

20081448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278921 (or 278914 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 20081448 is about 4481.2328660760. The cubic root of 20081448 is about 271.8097357415.

The spelling of 20081448 in words is "twenty million, eighty-one thousand, four hundred forty-eight".