20422315 has 8 divisors (see below), whose sum is σ = 24549408. Its totient is φ = 16309440.

The previous prime is 20422313. The next prime is 20422343. The reversal of 20422315 is 51322402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20422315 - 2¹ = 20422313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20422292 and 20422301.

It is not an unprimeable number, because it can be changed into a prime (20422313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82 + ... + 6391.

It is an arithmetic number, because the mean of its divisors is an integer number (3068676).

Almost surely, 2^20422315 is an apocalyptic number.

20422315 is a deficient number, since it is larger than the sum of its proper divisors (4127093).

20422315 is an equidigital number, since it uses as much as digits as its factorization.

20422315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7109.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20422315 is about 4519.1055530934. The cubic root of 20422315 is about 273.3390350123.

Adding to 20422315 its reverse (51322402), we get a palindrome (71744717).

The spelling of 20422315 in words is "twenty million, four hundred twenty-two thousand, three hundred fifteen".