20081148 has 48 divisors (see below), whose sum is σ = 49986720. Its totient is φ = 6252544.

The previous prime is 20081107. The next prime is 20081153. The reversal of 20081148 is 84118002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35008 + ... + 35576.

It is an arithmetic number, because the mean of its divisors is an integer number (1041390).

Almost surely, 2^20081148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20081148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24993360).

20081148 is an abundant number, since it is smaller than the sum of its proper divisors (29905572).

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

20081148 is a wasteful number, since it uses less digits than its factorization.

20081148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 764 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 20081148 is about 4481.1993930197. The cubic root of 20081148 is about 271.8083821982.

The spelling of 20081148 in words is "twenty million, eighty-one thousand, one hundred forty-eight".