20412315 has 96 divisors (see below), whose sum is σ = 45467136. Its totient is φ = 8225280.

The previous prime is 20412277. The next prime is 20412319. The reversal of 20412315 is 51321402.

20412315 = 582² + 583² + ... + 636².

It is not a de Polignac number, because 20412315 - 2¹⁰ = 20411291 is a prime.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (20412319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 148927 + ... + 149063.

It is an arithmetic number, because the mean of its divisors is an integer number (473616).

Almost surely, 2^20412315 is an apocalyptic number.

20412315 is an abundant number, since it is smaller than the sum of its proper divisors (25054821).

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

20412315 is a wasteful number, since it uses less digits than its factorization.

20412315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20412315 is about 4517.9990039840. Note that the first 3 decimals coincide. The cubic root of 20412315 is about 273.2944132898.

Adding to 20412315 its reverse (51321402), we get a palindrome (71733717).

It can be divided in two parts, 2041 and 2315, that added together give a square (4356 = 66²).

The spelling of 20412315 in words is "twenty million, four hundred twelve thousand, three hundred fifteen".