12861996 has 48 divisors (see below), whose sum is σ = 36320256. Its totient is φ = 3458304.

The previous prime is 12861983. The next prime is 12861997. The reversal of 12861996 is 69916821.

It is a super-2 number, since 2×12861996² = 330861882208032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (12861997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3076 + ... + 5931.

It is an arithmetic number, because the mean of its divisors is an integer number (756672).

Almost surely, 2^12861996 is an apocalyptic number.

It is an amenable number.

12861996 is an abundant number, since it is smaller than the sum of its proper divisors (23458260).

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

12861996 is a wasteful number, since it uses less digits than its factorization.

12861996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9038 (or 9036 counting only the distinct ones).

The product of its digits is 46656, while the sum is 42.

The square root of 12861996 is about 3586.3625025923. The cubic root of 12861996 is about 234.2984722239.

The spelling of 12861996 in words is "twelve million, eight hundred sixty-one thousand, nine hundred ninety-six".