12817380 has 24 divisors (see below), whose sum is σ = 35888832. Its totient is φ = 3417952.

The previous prime is 12817373. The next prime is 12817421. The reversal of 12817380 is 8371821.

It is a happy number.

12817380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106752 + ... + 106871.

It is an arithmetic number, because the mean of its divisors is an integer number (1495368).

Almost surely, 2^12817380 is an apocalyptic number.

12817380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12817380 is an abundant number, since it is smaller than the sum of its proper divisors (23071452).

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

12817380 is a wasteful number, since it uses less digits than its factorization.

12817380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213635 (or 213633 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 12817380 is about 3580.1368688920. The cubic root of 12817380 is about 234.0272449832.

The spelling of 12817380 in words is "twelve million, eight hundred seventeen thousand, three hundred eighty".