12870156 has 96 divisors (see below), whose sum is σ = 35900928. Its totient is φ = 3548160.

The previous prime is 12870107. The next prime is 12870157. The reversal of 12870156 is 65107821.

12870156 = 299² + 300² + ... + 402².

It is not an unprimeable number, because it can be changed into a prime (12870157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60891 + ... + 61101.

It is an arithmetic number, because the mean of its divisors is an integer number (373968).

Almost surely, 2^12870156 is an apocalyptic number.

It is a pronic number, being equal to 3587×3588.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12870156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17950464).

12870156 is an abundant number, since it is smaller than the sum of its proper divisors (23030772).

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

12870156 is a wasteful number, since it uses less digits than its factorization.

12870156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 269 counting only the distinct ones).

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

The square root of 12870156 is about 3587.4999651568. The cubic root of 12870156 is about 234.3480101898.

Adding to 12870156 its reverse (65107821), we get a palindrome (77977977).

The spelling of 12870156 in words is "twelve million, eight hundred seventy thousand, one hundred fifty-six".