12917000 has 32 divisors (see below), whose sum is σ = 30228120. Its totient is φ = 5166400.

The previous prime is 12916999. The next prime is 12917011. The reversal of 12917000 is 71921.

It can be written as a sum of positive squares in 4 ways, for example, as 4072324 + 8844676 = 2018^2 + 2974^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 5459 + ... + 7458.

Almost surely, 2^12917000 is an apocalyptic number.

12917000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12917000 is an abundant number, since it is smaller than the sum of its proper divisors (17311120).

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

12917000 is a wasteful number, since it uses less digits than its factorization.

12917000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12938 (or 12924 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 12917000 is about 3594.0228157317. The cubic root of 12917000 is about 234.6319877444.

Adding to 12917000 its reverse (71921), we get a palindrome (12988921).

The spelling of 12917000 in words is "twelve million, nine hundred seventeen thousand".