Search a number
-
+
13074791 = 101312907
BaseRepresentation
bin110001111000…
…000101100111
3220121021020112
4301320011213
511321343131
61144123235
7216063632
oct61700547
926537215
1013074791
117420314
12446651b
13292a282
141a44c19
15123402b
hexc78167

13074791 has 4 divisors (see below), whose sum is σ = 13088712. Its totient is φ = 13060872.

The previous prime is 13074781. The next prime is 13074797. The reversal of 13074791 is 19747031.

13074791 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: 19747031 = 31637001.

It is a cyclic number.

It is not a de Polignac number, because 13074791 - 218 = 12812647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13074797) 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, 5441 + ... + 7466.

It is an arithmetic number, because the mean of its divisors is an integer number (3272178).

Almost surely, 213074791 is an apocalyptic number.

13074791 is a deficient number, since it is larger than the sum of its proper divisors (13921).

13074791 is a wasteful number, since it uses less digits than its factorization.

13074791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13920.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 13074791 is about 3615.9080463972. The cubic root of 13074791 is about 235.5835264620.

The spelling of 13074791 in words is "thirteen million, seventy-four thousand, seven hundred ninety-one".

Divisors: 1 1013 12907 13074791