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12970791 = 321441199
BaseRepresentation
bin110001011110…
…101100100111
3220101222120200
4301132230213
511310031131
61142001543
7215151501
oct61365447
926358520
1012970791
11735a169
1244162b3
1328c1b32
141a18d71
1512132e6
hexc5eb27

12970791 has 6 divisors (see below), whose sum is σ = 18735600. Its totient is φ = 8647188.

The previous prime is 12970759. The next prime is 12970799. The reversal of 12970791 is 19707921.

It is not a de Polignac number, because 12970791 - 25 = 12970759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12970799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 720591 + ... + 720608.

It is an arithmetic number, because the mean of its divisors is an integer number (3122600).

Almost surely, 212970791 is an apocalyptic number.

12970791 is a deficient number, since it is larger than the sum of its proper divisors (5764809).

12970791 is a wasteful number, since it uses less digits than its factorization.

12970791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441205 (or 1441202 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 12970791 is about 3601.4984381504. The cubic root of 12970791 is about 234.9572338052.

It can be divided in two parts, 1 and 2970791, that added together give a palindrome (2970792).

The spelling of 12970791 in words is "twelve million, nine hundred seventy thousand, seven hundred ninety-one".

Divisors: 1 3 9 1441199 4323597 12970791