12917030 has 64 divisors (see below), whose sum is σ = 28366848. Its totient is φ = 4139520.

The previous prime is 12917029. The next prime is 12917039. The reversal of 12917030 is 3071921.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 12916987 and 12917005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12917039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114254 + ... + 114366.

It is an arithmetic number, because the mean of its divisors is an integer number (443232).

Almost surely, 2^12917030 is an apocalyptic number.

12917030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12917030 is an abundant number, since it is smaller than the sum of its proper divisors (15449818).

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

12917030 is a wasteful number, since it uses less digits than its factorization.

12917030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 12917030 is about 3594.0269893255. The cubic root of 12917030 is about 234.6321693902.

Adding to 12917030 its reverse (3071921), we get a palindrome (15988951).

The spelling of 12917030 in words is "twelve million, nine hundred seventeen thousand, thirty".