12017870 has 8 divisors (see below), whose sum is σ = 21632184. Its totient is φ = 4807144.

The previous prime is 12017867. The next prime is 12017897. The reversal of 12017870 is 7871021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600884 + ... + 600903.

It is an arithmetic number, because the mean of its divisors is an integer number (2704023).

Almost surely, 2^12017870 is an apocalyptic number.

12017870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12017870 is a deficient number, since it is larger than the sum of its proper divisors (9614314).

12017870 is a wasteful number, since it uses less digits than its factorization.

12017870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201794.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 12017870 is about 3466.6799679232. The cubic root of 12017870 is about 229.0564368315.

Adding to 12017870 its reverse (7871021), we get a palindrome (19888891).

The spelling of 12017870 in words is "twelve million, seventeen thousand, eight hundred seventy".