12817390 has 8 divisors (see below), whose sum is σ = 23071320. Its totient is φ = 5126952.

The previous prime is 12817373. The next prime is 12817421. The reversal of 12817390 is 9371821.

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

It is a congruent number.

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, 640860 + ... + 640879.

It is an arithmetic number, because the mean of its divisors is an integer number (2883915).

Almost surely, 2^12817390 is an apocalyptic number.

12817390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12817390 is a deficient number, since it is larger than the sum of its proper divisors (10253930).

12817390 is a wasteful number, since it uses less digits than its factorization.

12817390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281746.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12817390 is about 3580.1382654864. The cubic root of 12817390 is about 234.0273058451.

The spelling of 12817390 in words is "twelve million, eight hundred seventeen thousand, three hundred ninety".