12851982 has 48 divisors (see below), whose sum is σ = 32720688. Its totient is φ = 3594240.

The previous prime is 12851981. The next prime is 12852001. The reversal of 12851982 is 28915821.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12851981) 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, 78 + ... + 5070.

It is an arithmetic number, because the mean of its divisors is an integer number (681681).

Almost surely, 2^12851982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12851982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16360344).

12851982 is an abundant number, since it is smaller than the sum of its proper divisors (19868706).

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

12851982 is a wasteful number, since it uses less digits than its factorization.

12851982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025 (or 5022 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 12851982 is about 3584.9661086264. The cubic root of 12851982 is about 234.2376502986.

The spelling of 12851982 in words is "twelve million, eight hundred fifty-one thousand, nine hundred eighty-two".