12391070 has 16 divisors (see below), whose sum is σ = 22574160. Its totient is φ = 4896384.

The previous prime is 12391069. The next prime is 12391073. The reversal of 12391070 is 7019321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12391073) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6635 + ... + 8294.

It is an arithmetic number, because the mean of its divisors is an integer number (1410885).

Almost surely, 2^12391070 is an apocalyptic number.

12391070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12391070 is a deficient number, since it is larger than the sum of its proper divisors (10183090).

12391070 is a wasteful number, since it uses less digits than its factorization.

12391070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15019.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 12391070 is about 3520.0951691680. The cubic root of 12391070 is about 231.4033295279.

The spelling of 12391070 in words is "twelve million, three hundred ninety-one thousand, seventy".