20341320 has 64 divisors (see below), whose sum is σ = 61326720. Its totient is φ = 5397504.

The previous prime is 20341313. The next prime is 20341327. The reversal of 20341320 is 2314302.

It is an interprime number because it is at equal distance from previous prime (20341313) and next prime (20341327).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20341320.

It is not an unprimeable number, because it can be changed into a prime (20341327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40189 + ... + 40691.

It is an arithmetic number, because the mean of its divisors is an integer number (958230).

Almost surely, 2^20341320 is an apocalyptic number.

20341320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20341320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30663360).

20341320 is an abundant number, since it is smaller than the sum of its proper divisors (40985400).

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

20341320 is a wasteful number, since it uses less digits than its factorization.

20341320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20341320 is about 4510.1352529608. The cubic root of 20341320 is about 272.9772016008.

Adding to 20341320 its reverse (2314302), we get a palindrome (22655622).

The spelling of 20341320 in words is "twenty million, three hundred forty-one thousand, three hundred twenty".