12871650 has 96 divisors (see below), whose sum is σ = 36158400. Its totient is φ = 3001600.

The previous prime is 12871643. The next prime is 12871657. The reversal of 12871650 is 5617821.

12871650 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12871643) and next prime (12871657).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12871657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47716 + ... + 47984.

It is an arithmetic number, because the mean of its divisors is an integer number (376650).

Almost surely, 2^12871650 is an apocalyptic number.

12871650 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 12871650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18079200).

12871650 is an abundant number, since it is smaller than the sum of its proper divisors (23286750).

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

12871650 is a wasteful number, since it uses less digits than its factorization.

12871650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 12871650 is about 3587.7081821129. The cubic root of 12871650 is about 234.3570777407.

The spelling of 12871650 in words is "twelve million, eight hundred seventy-one thousand, six hundred fifty".