20341818 has 96 divisors (see below), whose sum is σ = 55036800. Its totient is φ = 5298048.

The previous prime is 20341817. The next prime is 20341829. The reversal of 20341818 is 81814302.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20341791 and 20341800.

It is not an unprimeable number, because it can be changed into a prime (20341813) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69280 + ... + 69572.

It is an arithmetic number, because the mean of its divisors is an integer number (573300).

Almost surely, 2^20341818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20341818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27518400).

20341818 is an abundant number, since it is smaller than the sum of its proper divisors (34694982).

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

20341818 is a wasteful number, since it uses less digits than its factorization.

20341818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 20341818 is about 4510.1904616102. The cubic root of 20341818 is about 272.9794292756.

The spelling of 20341818 in words is "twenty million, three hundred forty-one thousand, eight hundred eighteen".