12681930 has 48 divisors (see below), whose sum is σ = 32150304. Its totient is φ = 3201120.

The previous prime is 12681871. The next prime is 12681931. The reversal of 12681930 is 3918621.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (12681931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10245 + ... + 11415.

It is an arithmetic number, because the mean of its divisors is an integer number (669798).

Almost surely, 2^12681930 is an apocalyptic number.

12681930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12681930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16075152).

12681930 is an abundant number, since it is smaller than the sum of its proper divisors (19468374).

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

12681930 is a wasteful number, since it uses less digits than its factorization.

12681930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219 (or 1200 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 12681930 is about 3561.1697516406. The cubic root of 12681930 is about 233.1999487087.

The spelling of 12681930 in words is "twelve million, six hundred eighty-one thousand, nine hundred thirty".