12697980 has 96 divisors (see below), whose sum is σ = 38465280. Its totient is φ = 3118080.

The previous prime is 12697973. The next prime is 12697981. The reversal of 12697980 is 8979621.

It is a super-2 number, since 2×12697980² = 322477392160800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12697981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60075 + ... + 60285.

It is an arithmetic number, because the mean of its divisors is an integer number (400680).

Almost surely, 2^12697980 is an apocalyptic number.

12697980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12697980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19232640).

12697980 is an abundant number, since it is smaller than the sum of its proper divisors (25767300).

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

12697980 is a wasteful number, since it uses less digits than its factorization.

12697980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 12697980 is about 3563.4225121363. The cubic root of 12697980 is about 233.2982849852.

The spelling of 12697980 in words is "twelve million, six hundred ninety-seven thousand, nine hundred eighty".