12159870 has 32 divisors (see below), whose sum is σ = 30454272. Its totient is φ = 3101472.

The previous prime is 12159863. The next prime is 12159877. The reversal of 12159870 is 7895121.

It is an interprime number because it is at equal distance from previous prime (12159863) and next prime (12159877).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12159877) 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, 8122 + ... + 9501.

It is an arithmetic number, because the mean of its divisors is an integer number (951696).

Almost surely, 2^12159870 is an apocalyptic number.

12159870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12159870 is an abundant number, since it is smaller than the sum of its proper divisors (18294402).

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

12159870 is a wasteful number, since it uses less digits than its factorization.

12159870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17656.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 12159870 is about 3487.1005147543. The cubic root of 12159870 is about 229.9550636849.

The spelling of 12159870 in words is "twelve million, one hundred fifty-nine thousand, eight hundred seventy".