12315020 has 12 divisors (see below), whose sum is σ = 25861584. Its totient is φ = 4926000.

The previous prime is 12315013. The next prime is 12315077. The reversal of 12315020 is 2051321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12314986 and 12315004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307856 + ... + 307895.

It is an arithmetic number, because the mean of its divisors is an integer number (2155132).

Almost surely, 2^12315020 is an apocalyptic number.

12315020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12315020 is an abundant number, since it is smaller than the sum of its proper divisors (13546564).

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

12315020 is a wasteful number, since it uses less digits than its factorization.

12315020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615760 (or 615758 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 12315020 is about 3509.2762786649. The cubic root of 12315020 is about 230.9289462445.

Adding to 12315020 its reverse (2051321), we get a palindrome (14366341).

The spelling of 12315020 in words is "twelve million, three hundred fifteen thousand, twenty".