12881670 has 16 divisors (see below), whose sum is σ = 30916080. Its totient is φ = 3435104.

The previous prime is 12881669. The next prime is 12881689. The reversal of 12881670 is 7618821.

It is a happy number.

It is a super-3 number, since 3×12881670³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

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, 214665 + ... + 214724.

It is an arithmetic number, because the mean of its divisors is an integer number (1932255).

Almost surely, 2^12881670 is an apocalyptic number.

12881670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12881670 is an abundant number, since it is smaller than the sum of its proper divisors (18034410).

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

12881670 is a wasteful number, since it uses less digits than its factorization.

12881670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429399.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 12881670 is about 3589.1043450978. The cubic root of 12881670 is about 234.4178741121.

The spelling of 12881670 in words is "twelve million, eight hundred eighty-one thousand, six hundred seventy".