[go: up one dir, main page]

Search a number
-
+
12970757 = 37350561
BaseRepresentation
bin110001011110…
…101100000101
3220101222112102
4301132230011
511310031012
61142001445
7215151422
oct61365405
926358472
1012970757
11735a138
124416285
1328c1b07
141a18d49
1512132c2
hexc5eb05

12970757 has 4 divisors (see below), whose sum is σ = 13321356. Its totient is φ = 12620160.

The previous prime is 12970753. The next prime is 12970759. The reversal of 12970757 is 75707921.

12970757 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75707921 = 312442191.

It can be written as a sum of positive squares in 2 ways, for example, as 11296321 + 1674436 = 3361^2 + 1294^2 .

It is a cyclic number.

It is not a de Polignac number, because 12970757 - 22 = 12970753 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12970757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12970751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175244 + ... + 175317.

It is an arithmetic number, because the mean of its divisors is an integer number (3330339).

Almost surely, 212970757 is an apocalyptic number.

It is an amenable number.

12970757 is a deficient number, since it is larger than the sum of its proper divisors (350599).

12970757 is an equidigital number, since it uses as much as digits as its factorization.

12970757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350598.

The product of its (nonzero) digits is 30870, while the sum is 38.

The square root of 12970757 is about 3601.4937178898. The cubic root of 12970757 is about 234.9570285092.

The spelling of 12970757 in words is "twelve million, nine hundred seventy thousand, seven hundred fifty-seven".

Divisors: 1 37 350561 12970757