Search a number
-
+
14242681 = 23619247
BaseRepresentation
bin110110010101…
…001101111001
3222210121021201
4312111031321
512121231211
61225134201
7232026565
oct66251571
928717251
1014242681
118048812
12492a361
132c48a2b
141c6a6a5
1513b50c1
hexd95379

14242681 has 4 divisors (see below), whose sum is σ = 14861952. Its totient is φ = 13623412.

The previous prime is 14242667. The next prime is 14242721. The reversal of 14242681 is 18624241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14242681 is a prime.

It is a super-2 number, since 2×142426812 = 405707924135522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14242601) 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, 309601 + ... + 309646.

It is an arithmetic number, because the mean of its divisors is an integer number (3715488).

Almost surely, 214242681 is an apocalyptic number.

It is an amenable number.

14242681 is a deficient number, since it is larger than the sum of its proper divisors (619271).

14242681 is an equidigital number, since it uses as much as digits as its factorization.

14242681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619270.

The product of its digits is 3072, while the sum is 28.

The square root of 14242681 is about 3773.9476678937. The cubic root of 14242681 is about 242.3988652566.

The spelling of 14242681 in words is "fourteen million, two hundred forty-two thousand, six hundred eighty-one".

Divisors: 1 23 619247 14242681