20407316 has 12 divisors (see below), whose sum is σ = 35790720. Its totient is φ = 10181400.

The previous prime is 20407301. The next prime is 20407319. The reversal of 20407316 is 61370402.

It is a junction number, because it is equal to n+sod(n) for n = 20407291 and 20407300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20407319) 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 3 ways as a sum of consecutive naturals, for example, 3410 + ... + 7241.

It is an arithmetic number, because the mean of its divisors is an integer number (2982560).

Almost surely, 2^20407316 is an apocalyptic number.

It is an amenable number.

20407316 is a deficient number, since it is larger than the sum of its proper divisors (15383404).

20407316 is a wasteful number, since it uses less digits than its factorization.

20407316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11134 (or 11132 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20407316 is about 4517.4457384677. The cubic root of 20407316 is about 273.2721014270.

Adding to 20407316 its reverse (61370402), we get a palindrome (81777718).

The spelling of 20407316 in words is "twenty million, four hundred seven thousand, three hundred sixteen".