12969810 has 144 divisors (see below), whose sum is σ = 41774616. Its totient is φ = 2774016.

The previous prime is 12969797. The next prime is 12969821. The reversal of 12969810 is 1896921.

It can be written as a sum of positive squares in 4 ways, for example, as 12895281 + 74529 = 3591^2 + 273^2 .

It is a super-2 number, since 2×12969810² = 336431942872200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 74884 + ... + 75056.

Almost surely, 2^12969810 is an apocalyptic number.

12969810 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 12969810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20887308).

12969810 is an abundant number, since it is smaller than the sum of its proper divisors (28804806).

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

12969810 is a wasteful number, since it uses less digits than its factorization.

12969810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 12969810 is about 3601.3622422633. The cubic root of 12969810 is about 234.9513102688.

The spelling of 12969810 in words is "twelve million, nine hundred sixty-nine thousand, eight hundred ten".