12971386 has 16 divisors (see below), whose sum is σ = 20328480. Its totient is φ = 6201360.

The previous prime is 12971369. The next prime is 12971411. The reversal of 12971386 is 68317921.

12971386 = 574² + 575² + ... + 610².

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2881 + ... + 5851.

It is an arithmetic number, because the mean of its divisors is an integer number (1270530).

Almost surely, 2^12971386 is an apocalyptic number.

12971386 is a deficient number, since it is larger than the sum of its proper divisors (7357094).

12971386 is a wasteful number, since it uses less digits than its factorization.

12971386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069.

The product of its digits is 18144, while the sum is 37.

The square root of 12971386 is about 3601.5810417093. The cubic root of 12971386 is about 234.9608264264.

The spelling of 12971386 in words is "twelve million, nine hundred seventy-one thousand, three hundred eighty-six".