20411844 has 12 divisors (see below), whose sum is σ = 47627664. Its totient is φ = 6803944.

The previous prime is 20411843. The next prime is 20411869. The reversal of 20411844 is 44811402.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20411843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850482 + ... + 850505.

It is an arithmetic number, because the mean of its divisors is an integer number (3968972).

Almost surely, 2^20411844 is an apocalyptic number.

It is an amenable number.

20411844 is an abundant number, since it is smaller than the sum of its proper divisors (27215820).

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

20411844 is a wasteful number, since it uses less digits than its factorization.

20411844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700994 (or 1700992 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 20411844 is about 4517.9468788378. The cubic root of 20411844 is about 273.2923112473.

The spelling of 20411844 in words is "twenty million, four hundred eleven thousand, eight hundred forty-four".